WO2022022345A1

WO2022022345A1 - Event notification method, apparatus and system

Info

Publication number: WO2022022345A1
Application number: PCT/CN2021/107477
Authority: WO
Inventors: 周晓云
Original assignee: 华为技术有限公司
Priority date: 2020-07-31
Filing date: 2021-07-20
Publication date: 2022-02-03
Also published as: CN114071554A

Abstract

The embodiments of the present application disclose an event notification method, an apparatus and a system, relating to the field of communication technology. When UPF (PSA) reselection occurs, a corresponding event report can be acquired without the need for an application server to re-issue event subscription information, thereby reducing the acquisition delay of the event report. The specific solution is as follows: receiving first information and second information, wherein the first information comprises at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, the network access identifier being used to indicate the location of an application server of an application, and the event notification address being a destination address for receiving event notification information; and the second information being used for subscribing to a first event of a terminal device, the terminal device being a device accessing the application server of the application; selecting, for the terminal device, a first user plane network element corresponding to a first data network access identifier; and sending third information and a first event notification address, the third information being determined according to the second information.

Description

一种事件通知方法、装置和***An event notification method, device and system

本申请要求于2020年7月31日提交国家知识产权局、申请号为202010763473.2、申请名称为“一种事件通知方法、装置和***”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application with the application number 202010763473.2 and the application title "An event notification method, device and system" filed with the State Intellectual Property Office on July 31, 2020, the entire contents of which are incorporated by reference in in this application.

技术领域technical field

本申请实施例涉及通信技术领域，尤其涉及一种事件通知方法、装置和***。The embodiments of the present application relate to the field of communication technologies, and in particular, to an event notification method, apparatus, and system.

背景技术Background technique

在目前的通信架构(如***移动通信，或第五代移动通信)中，终端设备在接入网络后即可实现与应用服务器的交互。在该交互过程中，应用服务器可以通过向与终端设备建立连接的接入网设备(如用户面功能(user plane function，UPF))发送事件订阅信息，以便收集终端设备在与对应的应用服务器通信过程中的一些数据(包括业务相关数据以及与业务不相关的数据)，由此提供更好的通信服务。In the current communication architecture (eg, fourth-generation mobile communication, or fifth-generation mobile communication), the terminal device can interact with the application server after accessing the network. In the interaction process, the application server may send event subscription information to the access network device (such as a user plane function (UPF)) that establishes a connection with the terminal device, so as to collect information on the communication between the terminal device and the corresponding application server. Some data in the process (including business-related data and data not related to business), thereby providing better communication services.

在第五代移动通信(5th generation mobile networks，5G)中，终端设备为用户设备(user equipment，UE)，应用服务器订阅的事件可以为服务质量(quality of service，QoS)监控信息。如图1所示，应用服务器可以通过应用功能(AF)，策略控制功能(policy control function，PCF)，会话管理功能(session management function，SMF)，将针对该UE的QoS监控请求信息发送给UPF。UPF可以根据该QoS监控请求信息，获取与UE通信过程中的QoS监控事件报告，并将该QoS监控事件报告反馈给AF。其中，UPF可以通过接收QoS监控请求信息的路径返回该QoS监控事件报告，即UPF通过SMF，PCF以及AF将该QoS监控事件报告发送给对应的应用服务器。为了节省UPF返回该QoS监控事件报告的时延，UPF还可直接将该QoS监控事件报告通过如图1所示的虚线箭头发送给AF。需要说明的是，一般而言，UPF进行QoS监控等事件订阅的检测时，对应的UE为与UPF建立协议数据单元(protocol data unit，PDU)会话的UE。In 5th generation mobile networks (5G), the terminal device is user equipment (UE), and the events subscribed by the application server can be quality of service (QoS) monitoring information. As shown in Figure 1, the application server can send the QoS monitoring request information for the UE to the UPF through the application function (AF), policy control function (PCF), session management function (session management function, SMF). . The UPF can acquire the QoS monitoring event report in the process of communicating with the UE according to the QoS monitoring request information, and feed back the QoS monitoring event report to the AF. The UPF may return the QoS monitoring event report through the path of receiving the QoS monitoring request information, that is, the UPF sends the QoS monitoring event report to the corresponding application server through the SMF, the PCF and the AF. In order to save the time delay for the UPF to return the QoS monitoring event report, the UPF may also directly send the QoS monitoring event report to the AF through the dashed arrow as shown in FIG. 1 . It should be noted that, in general, when the UPF performs event subscription detection such as QoS monitoring, the corresponding UE is the UE that establishes a protocol data unit (protocol data unit, PDU) session with the UPF.

UE经常会处于移动的状态，而随着UE的移动，可能会出现UPF的重选。这样，当应用服务器需要获取UPF与该UE通信过程中的事件订阅对应的事件报告时，就需要重新通过AF，PCF，SMF向重选后的UPF下发事件订阅信息。也就导致了应用服务器无法快速地获取监控信息对应的事件报告。The UE is often in a moving state, and as the UE moves, UPF reselection may occur. In this way, when the application server needs to obtain the event report corresponding to the event subscription in the communication process between the UPF and the UE, it needs to re-deliver the event subscription information to the reselected UPF through the AF, PCF and SMF. As a result, the application server cannot quickly obtain the event report corresponding to the monitoring information.

发明内容SUMMARY OF THE INVENTION

本申请提供一种事件通知方法、装置和***，能够在由于终端设备移动等原因出现UPF(PSA)重选时，不需要应用服务器重新下发事件订阅信息即可获取对应的事件报告，由此减小的事件报告的获取延时，并减小了***的信令开销。The present application provides an event notification method, device and system, which can obtain a corresponding event report without the need for an application server to re-issue event subscription information when a UPF (PSA) reselection occurs due to a terminal device moving or other reasons. The acquisition delay of the event report is reduced, and the signaling overhead of the system is reduced.

为达到上述目的，本申请采用如下技术方案：To achieve the above object, the application adopts the following technical solutions:

第一方面，提供一种事件通知方法，该方法包括：发送第一信息和第二信息，第一信息包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址，网络接入标识用于指示应用的应用服务器的位置，事件通知地址为接收事件通知信息的目的地址，目的地址为应用对应的本地能力开放网元的地址或应用功能(AF) 的地址。第二信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。基于该方案，应用服务器可以通过AF下发包括数据网络接入标识以及对应的事件通知地址的对应关系。应用服务器还可通过AF下发事件订阅信息。由此，使得在UPF出现重选时，其他网元(如SMF)即可根据最新的PSA以及上述对应关系，确定新的PSA对应的事件订阅地址，这样也就不需要应用服务器再次通过AF下发事件订阅信息，由此能够显著地减小延时，并能够精简在重复下发事件订阅信息过程中的***的信令开销。需要说明的是，在不同的实现方式中，应用服务器可以通过相同的AF下发上述对应关系以及事件订阅信息，也可通过不同的AF下发上述对应关系以及事件订阅信息。A first aspect provides an event notification method, the method comprising: sending first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, The network access identifier is used to indicate the location of the application server of the application, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability exposure network element corresponding to the application or the address of the application function (AF). The second information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application. Based on this solution, the application server can issue the correspondence including the data network access identifier and the corresponding event notification address through the AF. The application server can also send event subscription information through AF. As a result, when UPF reselection occurs, other network elements (such as SMF) can determine the event subscription address corresponding to the new PSA according to the latest PSA and the above-mentioned corresponding relationship, so that the application server does not need to download the AF again. The event subscription information is sent, thereby the delay can be significantly reduced, and the signaling overhead of the system in the process of repeatedly sending the event subscription information can be reduced. It should be noted that, in different implementation manners, the application server may deliver the above correspondence and event subscription information through the same AF, or may deliver the above correspondence and event subscription information through different AFs.

在一种可能的设计中，第二信息还包括：通知关联标识,通知关联标识用于将第一事件的事件通知信息与第一信息关联。基于该方案，AF还可以下发与事件订阅信息对应的关联系信息(如第一通知关联信息)，以便UPF在上报事件报告时，可以同时将该通知关联信息反馈给应用服务器。以便应用服务器能够根据该关联信息确定事件报告与发送的事件订阅信息的关联。In a possible design, the second information further includes: a notification association identifier, where the notification association identifier is used to associate the event notification information of the first event with the first information. Based on this solution, the AF can also send related information (such as the first notification related information) corresponding to the event subscription information, so that when the UPF reports the event report, the notification related information can be fed back to the application server at the same time. So that the application server can determine the association between the event report and the sent event subscription information according to the association information.

在一种可能的设计中，第二信息至少包括以下信息之一：服务质量QoS监控请求信息，QoS通知控制请求信息和位置请求信息。基于该方案，提供了一种具体的第二信息的示例，即该第二信息可以为进行QoS监控请求的信息，或者QoS通知控制请求的信息，或者终端设备的位置请求的信息。应当理解的是，QoS相关信息为业务相关的信息，而位置请求信息为非业务相关信息，因此，针对其他的业务信息以及非业务信息，可以采用上述第一方面及其可能的设计中的方案实现事件的上报，并获取对应的有益效果，因此也应该包括在本申请的保护范围之内。In a possible design, the second information includes at least one of the following information: quality of service QoS monitoring request information, QoS notification control request information and location request information. Based on this solution, a specific example of the second information is provided, that is, the second information may be information for making a QoS monitoring request, or information for a QoS notification control request, or information for a location request of a terminal device. It should be understood that the QoS-related information is service-related information, while the location request information is non-service-related information. Therefore, for other service information and non-service information, the solutions in the above-mentioned first aspect and its possible designs can be adopted. It realizes the reporting of events and obtains corresponding beneficial effects, so it should also be included in the protection scope of this application.

第二方面，提供一种事件通知装置，该装置包括：确定单元和发送单元。其中，确定单元用于确定第一信息和第二信息，第一信息包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址，网络接入标识用于指示应用的应用服务器的位置，事件通知地址为接收事件通知信息的目的地址，目的地址为应用对应的本地能力开放网元的地址或应用功能(AF)的地址。第二信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。发送单元用于发送第一信息和第二信息。作为一种示例，确定单元具体的可以根据应用服务器的指示，确定该第一信息和第二信息的具体内容。In a second aspect, an event notification device is provided, the device comprising: a determining unit and a sending unit. The determining unit is configured to determine first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, and the network access identifier is used to indicate the application's The location of the application server, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability open network element corresponding to the application or the address of the application function (AF). The second information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application. The sending unit is used for sending the first information and the second information. As an example, the determining unit may specifically determine the specific content of the first information and the second information according to the instruction of the application server.

在一种可能的设计中，第二信息还包括：通知关联标识,通知关联标识用于将第一事件的事件通知信息与第一信息关联。In a possible design, the second information further includes: a notification association identifier, where the notification association identifier is used to associate the event notification information of the first event with the first information.

在一种可能的设计中，第二信息至少包括以下信息之一：服务质量QoS监控请求信息，QoS通知控制请求信息和位置请求信息。In a possible design, the second information includes at least one of the following information: quality of service QoS monitoring request information, QoS notification control request information and location request information.

第三方面，提供一种应用功能(AF)实体，AF实体包括一个或多个处理器和一个或多个存储器。一个或多个存储器与一个或多个处理器耦合，一个或多个存储器存储有计算机指令。当一个或多个处理器执行计算机指令时，使得AF实体执行如第一方面及其可能设计中任一项的事件通知方法。In a third aspect, an application function (AF) entity is provided, the AF entity including one or more processors and one or more memories. One or more memories are coupled to the one or more processors, and the one or more memories store computer instructions. The computer instructions, when executed by one or more processors, cause the AF entity to perform the event notification method as in any of the first aspect and possible designs thereof.

第四方面，提供一种计算机可读存储介质，该计算机可读存储介质包括计算机指令，当该计算机指令运行时，执行如第一方面及其可能的实现方式中任一项所述的事件通知方法。In a fourth aspect, a computer-readable storage medium is provided. The computer-readable storage medium includes computer instructions. When the computer instructions are executed, the event notification according to any one of the first aspect and its possible implementations is executed. method.

第五方面，提供一种芯片***，该芯片包括处理电路和接口。该处理电路用于从存储介质中调用并运行该存储介质中存储的计算机程序，以执行如第一方面及其可能的实现方式中任一项所述的事件通知方法。In a fifth aspect, a chip system is provided, the chip includes a processing circuit and an interface. The processing circuit is configured to call and run the computer program stored in the storage medium from the storage medium, so as to execute the event notification method according to any one of the first aspect and its possible implementation manners.

应当理解的是，第二方面，第三方面，第四方面以及第五方面提供的方案，均能够对应到第一方面或其可能的设计中，因此能够获取的有益效果类似，此处不再赘述。It should be understood that the solutions provided in the second aspect, the third aspect, the fourth aspect and the fifth aspect can all correspond to the first aspect or its possible designs, so the beneficial effects that can be obtained are similar, which are not repeated here. Repeat.

第六方面，提供一种事件通知方法，方法包括：接收第一信息和第二信息，第一信息包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址，网络接入标识用于指示应用的应用服务器的位置，事件通知地址为接收事件通知信息的目的地址，目的地址为应用对应的本地能力开放网元的地址或应用功能AF的地址。第二信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。发送第三信息和第一信息，其中，第三信息根据第二信息确定，用于订阅第一事件。基于该方案，核心网元可以接收来自AF的第一信息和第二信息，并对其进行响应的处理，以便于其他网元进行响应的处理。示例性的，该核心网元可以为PCF，该PCF可以根据第一信息和第二信息生成对应的PCC规则，并将该PCC规则下发给其他网元(如SMF)。其中，该PCC规则中可以包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址(如第一信息)，以及用于订阅第一事件的第三信息。该第三信息与第二信息可以相同，也可以是PCF对根据第二信息确定的(如PCF对该第二信息的内容进行转码等处理获取第三信息)。需要说明的是，对于一些时间订阅信息对应的事件是与终端设备对应的，因此，在PCC规则中还可包括目标终端设备的标识信息。该标识信息可以用于指示一个终端设备，也可用于指示一个终端设备组。A sixth aspect provides an event notification method, the method comprising: receiving first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, and the network The access identifier is used to indicate the location of the application server of the application, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability open network element corresponding to the application or the address of the application function AF. The second information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application. Sending third information and first information, wherein the third information is determined according to the second information and used for subscribing to the first event. Based on this solution, the core network element can receive the first information and the second information from the AF, and perform response processing on them, so that other network elements can perform response processing. Exemplarily, the core network element may be a PCF, and the PCF may generate a corresponding PCC rule according to the first information and the second information, and deliver the PCC rule to other network elements (eg, SMF). The PCC rule may include at least one data network access identifier, an event notification address (eg, first information) corresponding to the at least one data network access identifier, and third information for subscribing to the first event. The third information may be the same as the second information, or may be determined by the PCF according to the second information (eg, the PCF performs a process such as transcoding the content of the second information to obtain the third information). It should be noted that, for some events corresponding to the time subscription information, the events correspond to the terminal equipment, therefore, the identification information of the target terminal equipment may also be included in the PCC rule. The identification information can be used to indicate a terminal device, and can also be used to indicate a terminal device group.

在一种可能的设计中，第二信息还包括：通知关联标识,通知关联标识用于将第一事件的事件通知信息与第一信息关联，第三信息还包括通知关联标识。基于该方案，AF还可以下发与事件订阅信息对应的关联系信息(如第一通知关联信息)，以便UPF在上报事件报告时，可以同时将该通知关联信息反馈给应用服务器。以便应用服务器能够根据该关联信息确定事件报告与发送的事件订阅信息的关联。In a possible design, the second information further includes a notification association identifier, the notification association identifier is used to associate the event notification information of the first event with the first information, and the third information further includes a notification association identifier. Based on this solution, the AF can also send related information (such as the first notification related information) corresponding to the event subscription information, so that when the UPF reports the event report, the notification related information can be fed back to the application server at the same time. So that the application server can determine the association between the event report and the sent event subscription information according to the association information.

第七方面，提供一种事件通知装置，该装置包括：接收单元，发送单元。该接收单元，用于接收第一信息和第二信息，第一信息包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址，网络接入标识用于指示应用的应用服务器的位置，事件通知地址为接收事件通知信息的目的地址，目的地址为应用对应的本地能力开放网元的地址或应用功能AF的地址。第二信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。该发送单元，用于发送第三信息和第一信息，其中，第三信息根据第二信息确定，用于订阅第一事件。In a seventh aspect, an event notification device is provided, the device comprising: a receiving unit and a sending unit. The receiving unit is configured to receive first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, and the network access identifier is used to indicate the application The location of the application server, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability open network element corresponding to the application or the address of the application function AF. The second information is used to subscribe to the first event of the terminal device, which is the device accessing the application server of the application. The sending unit is configured to send third information and first information, wherein the third information is determined according to the second information and is used for subscribing to the first event.

在一种可能的设计中，第二信息还包括：通知关联标识,通知关联标识用于将第一事件的事件通知信息与第一信息关联，第三信息还包括通知关联标识。In a possible design, the second information further includes a notification association identifier, the notification association identifier is used to associate the event notification information of the first event with the first information, and the third information further includes a notification association identifier.

第八方面，提供一种策略控制功能(PCF)实体，PCF实体包括一个或多个处理器和一个或多个存储器。一个或多个存储器与一个或多个处理器耦合，一个或多个存储器存储有计算机指令。当一个或多个处理器执行计算机指令时，使得PCF实体执行如第六方面及其可能的设计中任一项的事件通知方法。In an eighth aspect, a Policy Control Function (PCF) entity is provided, where the PCF entity includes one or more processors and one or more memories. One or more memories are coupled to the one or more processors, and the one or more memories store computer instructions. The computer instructions, when executed by one or more processors, cause a PCF entity to perform the event notification method as in any of the sixth aspect and possible designs thereof.

第九方面，提供一种计算机可读存储介质，该计算机可读存储介质包括计算机指令，当该计算机指令运行时，执行如第六方面及其可能的实现方式中任一项所述的事件通知方法。In a ninth aspect, a computer-readable storage medium is provided, the computer-readable storage medium includes computer instructions, when the computer instructions are executed, execute the event notification as described in any one of the sixth aspect and its possible implementation manners method.

第十方面，提供一种芯片***，该芯片包括处理电路和接口。该处理电路用于从存储介质中调用并运行该存储介质中存储的计算机程序，以执行如第六方面及其可能的实现方式中任一项所述的事件通知方法。In a tenth aspect, a chip system is provided, the chip includes a processing circuit and an interface. The processing circuit is configured to call and run the computer program stored in the storage medium from the storage medium, so as to execute the event notification method according to any one of the sixth aspect and its possible implementation manners.

应当理解的是，上述第七方面，第八方面，第九方面以及第十方面提供的方案，均能够对应到第六方面或其可能的设计中，因此能够获取的有益效果类似，此处不再赘述。It should be understood that the solutions provided in the seventh aspect, the eighth aspect, the ninth aspect and the tenth aspect can all correspond to the sixth aspect or its possible designs, so the beneficial effects that can be obtained are similar. Repeat.

第十一方面，提供一种事件通知方法，该方法包括：接收第一信息和第二信息，第一信息包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址，网络接入标识用于指示应用的应用服务器的位置，事件通知地址为接收事件通知信息的目的地址，目的地址为应用对应的本地能力开放网元的地址或应用功能AF的地址。第二信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。为终端设备选择第一用户面网元，第一用户面网元对应第一数据网络接入标识，至少一个数据网络接入标识包含第一数据网络接入标识。发送第三信息，以及第一事件通知地址。其中，第三信息根据第二信息确定，用于订阅第一事件。第一事件通知地址根据第一数据网络接入标识，至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址确定。基于该方案，该网元可以接收来自其他网元的信息并进行响应的处理。示例性的，该网元可以为SMF。SMF可以接收来自PCF的PCC规则，该PCC规则中可以包括第一信息以及第二信息。SMF可以根据第一信息中的DNAI为终端设备选择对应的UPF作为PSA。SMF由于知晓DNAI与事件通知地址的对应关系，因此SMF也能够知晓第二信息所订阅的事件对应报告的反馈地址。SMF可以将事件订阅信息对应的第三信息，与对应的事件通知地址下发给UPF，以便UPF可以据此进行事件报告的获取以及反馈。其中，该第三信息可以根据第二信息确定，在不同实施例中，该第三信息可以与第二信息相同，也可与第二信息不同。An eleventh aspect provides an event notification method, the method comprising: receiving first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier , the network access identifier is used to indicate the location of the application server of the application, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability open network element corresponding to the application or the address of the application function AF. The second information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application. A first user plane network element is selected for the terminal device, the first user plane network element corresponds to the first data network access identifier, and at least one data network access identifier includes the first data network access identifier. Send the third information, and the first event notification address. The third information is determined according to the second information and is used to subscribe to the first event. The first event notification address is determined according to the first data network access identifier, at least one data network access identifier, and an event notification address corresponding to the at least one data network access identifier. Based on this solution, the network element can receive information from other network elements and process the response. Exemplarily, the network element may be an SMF. The SMF may receive the PCC rule from the PCF, and the PCC rule may include the first information and the second information. The SMF may select the corresponding UPF as the PSA for the terminal device according to the DNAI in the first information. Since the SMF knows the corresponding relationship between the DNAI and the event notification address, the SMF can also know the feedback address of the report corresponding to the event to which the second information is subscribed. The SMF may deliver the third information corresponding to the event subscription information and the corresponding event notification address to the UPF, so that the UPF can obtain and feedback the event report accordingly. The third information may be determined according to the second information. In different embodiments, the third information may be the same as the second information, or may be different from the second information.

在一种可能的设计中，发送第二事件通知地址，第二事件通知地址是与第一用户面网元对应的本地能力开放网元的地址。基于该方案，SMF还可向UPF下发当前选定的PSA对应的NEF的地址。示例性的，一般而言，如果在***架构中设置有本地NEF，则该NEF可以是与本地AF对应的。而在一些场景下，事件报告可能需要先被上报给其他NEF(如中央DC中的NEF)，因此，SMF可以将该NEF的地址一并下发给UPF，以便UPF能够将事件报告上报给正确的地址。In a possible design, the second event notification address is sent, where the second event notification address is the address of the local capability opening network element corresponding to the first user plane network element. Based on this solution, the SMF can also deliver the address of the NEF corresponding to the currently selected PSA to the UPF. Exemplarily, in general, if a local NEF is provided in the system architecture, the NEF may correspond to the local AF. In some scenarios, the event report may need to be reported to other NEFs (such as the NEF in the central DC) first. Therefore, the SMF can send the address of the NEF to the UPF, so that the UPF can report the event report to the correct the address of.

在一种可能的设计中，方法还包括：为访问应用的应用服务器的终端设备选择对应的第二用户面网元，第二用户面网元对应第二数据网络接入标识，至少一个数据网络接入标识包含第二数据网络接入标识。发送第四信息，以及第三事件通知地址。其中，第四信息根据第二信息确定，用于订阅第一事件。第三事件通知地址根据第二数据网络接入标识，至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址确定。基于该方案，当需要进行PSA重选(如终端设备发生了移动)时，SMF可以根据PCC规则中的DNAI，为终端设备选取新的UPF作为PSA。与该更新的PSA对应的DNAI具有更新的事件通知地址，因此SMF可以在重选PSA之后，将更新的事件通知地址发送给UPF，以便UPF能够根据该地址进行正确的事件上报。In a possible design, the method further includes: selecting a corresponding second user plane network element for the terminal device accessing the application server of the application, the second user plane network element corresponding to the second data network access identifier, at least one data network element The access identifier includes the second data network access identifier. Send the fourth message, and the third event notification address. The fourth information is determined according to the second information, and is used to subscribe to the first event. The third event notification address is determined according to the second data network access identifier, at least one data network access identifier, and an event notification address corresponding to the at least one data network access identifier. Based on this solution, when PSA reselection is required (for example, the terminal equipment moves), the SMF can select a new UPF as the PSA for the terminal equipment according to the DNAI in the PCC rule. The DNAI corresponding to the updated PSA has an updated event notification address, so the SMF can send the updated event notification address to the UPF after reselection of the PSA, so that the UPF can report the event correctly according to the address.

在一种可能的设计中，方法还包括：发送第***通知地址，第***通知地址是与第二用户面网元对应的本地能力开放网元的地址。基于该方案，提供了一种出现PSA重选时的处理方案。示例性的，当PSA出现重选后，SMF可以根据重选的PSA对应的DNAI，确定进行PSA重选后，事件报告的上报地址(如第***通知地址)。SMF可以将更新的上报地址下发给对应的更新的UPF，以便UPF可以根据事件订阅信息获取对应的事件报告，并向更新的地址上报该事件报告。In a possible design, the method further includes: sending a fourth event notification address, where the fourth event notification address is an address of a local capability opening network element corresponding to the second user plane network element. Based on this scheme, a treatment scheme when PSA reselection occurs is provided. Exemplarily, after PSA reselection occurs, the SMF may determine, according to the DNAI corresponding to the reselected PSA, the reporting address of the event report (eg, the fourth event notification address) after the PSA reselection is performed. The SMF can deliver the updated reporting address to the corresponding updated UPF, so that the UPF can obtain the corresponding event report according to the event subscription information, and report the event report to the updated address.

在一种可能的设计中，第二信息还包括：通知关联标识,通知关联标识用于将第一事件的事件通知信息与第一信息关联，第四信息还包括通知关联标识。基于该方案，SMF可以在发送更新的事件通知地址时，发送对应的通知关联标识，以便应用服务器能够根据该关联信息确定事件报告与发送的事件订阅信息的关联。In a possible design, the second information further includes a notification association identifier, the notification association identifier is used to associate the event notification information of the first event with the first information, and the fourth information further includes a notification association identifier. Based on this solution, the SMF can send the corresponding notification association identifier when sending the updated event notification address, so that the application server can determine the association between the event report and the sent event subscription information according to the association information.

第十二方面，提供一种事件通知装置，该装置包括：接收单元和发送单元。接收单元，用于接收第一信息和第二信息，第一信息包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址，网络接入标识用于指示应用的应用服务器的位置，事件通知地址为接收事件通知信息的目的地址，目的地址为应用对应的本地能力开放网元的地址或应用功能AF的地址。第二信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。为终端设备选择第一用户面网元，第一用户面网元对应第一数据网络接入标识，至少一个数据网络接入标识包含第一数据网络接入标识。发送单元，用于发送第三信息，以及第一事件通知地址。其中，第三信息根据第二信息确定，用于订阅第一事件。第一事件通知地址根据第一数据网络接入标识，至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址确定。A twelfth aspect provides an event notification device, the device comprising: a receiving unit and a sending unit. a receiving unit, configured to receive first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, and the network access identifier is used to indicate the application of the application The location of the server, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability open network element corresponding to the application or the address of the application function AF. The second information is used to subscribe to the first event of the terminal device, which is the device accessing the application server of the application. A first user plane network element is selected for the terminal device, the first user plane network element corresponds to the first data network access identifier, and at least one data network access identifier includes the first data network access identifier. A sending unit, configured to send the third information and the first event notification address. The third information is determined according to the second information and is used to subscribe to the first event. The first event notification address is determined according to the first data network access identifier, at least one data network access identifier, and an event notification address corresponding to the at least one data network access identifier.

在一种可能的设计中，发送单元，还用于发送第二事件通知地址，第二事件通知地址是与第一用户面网元对应的本地能力开放网元的地址。In a possible design, the sending unit is further configured to send a second event notification address, where the second event notification address is an address of a local capability opening network element corresponding to the first user plane network element.

在一种可能的设计中，该装置还包括配置单元，用于为访问应用的应用服务器的终端设备选择对应的第二用户面网元，第二用户面网元对应第二数据网络接入标识，至少一个数据网络接入标识包含第二数据网络接入标识。发送第四信息，以及第三事件通知地址。其中，第四信息根据第二信息确定，用于订阅第一事件。第三事件通知地址根据第二数据网络接入标识，至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址确定。In a possible design, the apparatus further includes a configuration unit for selecting a corresponding second user plane network element for the terminal device accessing the application server of the application, and the second user plane network element corresponds to the second data network access identifier , at least one data network access identifier includes a second data network access identifier. Send the fourth message, and the third event notification address. The fourth information is determined according to the second information, and is used to subscribe to the first event. The third event notification address is determined according to the second data network access identifier, at least one data network access identifier, and an event notification address corresponding to the at least one data network access identifier.

在一种可能的设计中，发送单元，还用于发送第***通知地址，第***通知地址是与第二用户面网元对应的本地能力开放网元的地址。In a possible design, the sending unit is further configured to send a fourth event notification address, where the fourth event notification address is an address of a local capability opening network element corresponding to the second user plane network element.

在一种可能的设计中，第二信息还包括：通知关联标识,通知关联标识用于将第一事件的事件通知信息与第一信息关联，第四信息还包括通知关联标识。In a possible design, the second information further includes a notification association identifier, the notification association identifier is used to associate the event notification information of the first event with the first information, and the fourth information further includes a notification association identifier.

第十三方面，提供一种会话管理功能(SMF)实体，SMF实体包括一个或多个处理器和一个或多个存储器。一个或多个存储器与一个或多个处理器耦合，一个或多个存储器存储有计算机指令。当一个或多个处理器执行计算机指令时，使得SMF实体执行如第十一方面及其可能设计中任一项所述的事件通知方法。A thirteenth aspect provides a session management function (SMF) entity, the SMF entity comprising one or more processors and one or more memories. One or more memories are coupled to the one or more processors, and the one or more memories store computer instructions. The computer instructions, when executed by one or more processors, cause the SMF entity to perform the event notification method of any one of the eleventh aspect and possible designs thereof.

第十四方面，提供一种计算机可读存储介质，该计算机可读存储介质包括计算机指令，当该计算机指令运行时，执行如第十一方面及其可能的实现方式中任一项所述的事件通知方法。A fourteenth aspect provides a computer-readable storage medium, the computer-readable storage medium includes computer instructions, when the computer instructions are executed, executes any one of the eleventh aspect and its possible implementation manners. Event notification method.

第十五方面，提供一种芯片***，该芯片包括处理电路和接口。该处理电路用于从存储介质中调用并运行该存储介质中存储的计算机程序，以执行如第十一方面及其可能的实现方式中任一项所述的事件通知方法。A fifteenth aspect provides a chip system, the chip includes a processing circuit and an interface. The processing circuit is configured to call and run the computer program stored in the storage medium from the storage medium, so as to execute the event notification method according to any one of the eleventh aspect and its possible implementation manners.

应当理解的是，上述第十二方面，第十三方面，第十四方面以及第十五方面提供的方案，均能够对应到第十一方面或其可能的设计中，因此能够获取的有益效果类似，此处不再赘述。It should be understood that the solutions provided in the twelfth aspect, the thirteenth aspect, the fourteenth aspect and the fifteenth aspect can all correspond to the eleventh aspect or its possible designs, and thus the beneficial effects can be obtained similar, and will not be repeated here.

第十六方面，提供一种事件通知方法，方法包括：接收第一信息，第一事件通知地址以及第二事件通知地址，第一信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。第一事件通知地址为接收第一事件的事件通知信息的目的地址，目的地址为应用对应应用功能AF的地址。第二事件通知地址是与第一用户面网元对应的本地能力开放网元的地址。通过第二事件通知地址对应的本地能力开放网元，向第一事件通知地址发送第二信息，第二信息包括第一事件的事件通知信息。基于该方案，UPF可以接收来自SMF的第一信息，并根据该第一信息进行事件报告的获取，进而向第一信息中指示的地址上报该事件报告。应当理解的是，由于UPF从第一信息中获取的第一事件通知地址以及第二事件通知地址，为SMF确定的最新的地址，因此，无论是否出现了PSA的重选，UPF都可在AF不重复下发事件订阅信息的前提下，获取正确的事件通知地址，由此也就使得UPF可以在AF不重复下发事件订阅信息的前提下，进行事件报告的顺利上报。A sixteenth aspect provides an event notification method, the method comprising: receiving first information, a first event notification address and a second event notification address, where the first information is used to subscribe to a first event of a terminal device, and the terminal device is an access application application server device. The first event notification address is a destination address for receiving event notification information of the first event, and the destination address is an address of the application corresponding to the application function AF. The second event notification address is the address of the local capability opening network element corresponding to the first user plane network element. Send second information to the first event notification address through the local capability opening network element corresponding to the second event notification address, where the second information includes event notification information of the first event. Based on this solution, the UPF can receive the first information from the SMF, obtain the event report according to the first information, and then report the event report to the address indicated in the first information. It should be understood that, since the first event notification address and the second event notification address obtained by the UPF from the first information are the latest addresses determined by the SMF, the UPF can On the premise that the event subscription information is not repeatedly issued, the correct event notification address is obtained, so that the UPF can successfully report the event report on the premise that the AF does not repeatedly issue the event subscription information.

在一种可能的设计中，第一信息还包括：通知关联标识,通知关联标识用于将第一事件的事件通知信息与事件通知地址关联，第二信息还包括通知关联标识。基于该方案，AF还可以下发与事件订阅信息对应的关联系信息(如第一通知关联信息)，以便UPF在上报事件报告时，可以同时将该通知关联信息反馈给应用服务器。以便应用服务器能够根据该关联信息确定事件报告与发送的事件订阅信息的关联。In a possible design, the first information further includes a notification association identifier, the notification association identifier is used to associate the event notification information of the first event with the event notification address, and the second information further includes a notification association identifier. Based on this solution, the AF can also send related information (such as the first notification related information) corresponding to the event subscription information, so that when the UPF reports the event report, the notification related information can be fed back to the application server at the same time. So that the application server can determine the association between the event report and the sent event subscription information according to the association information.

在一种可能的设计中，第一信息至少包括以下信息之一：服务质量QoS监控请求信息，QoS通知控制请求信息，以及位置请求信息。基于该方案，提供了一种具体的第二信息的示例，即该第二信息可以为进行QoS监控请求的信息，或者QoS通知控制请求的信息，或者终端设备的位置请求的信息。应当理解的是，QoS相关信息为业务相关的信息，而位置请求信息为非业务相关信息，因此，针对其他的业务信息以及非业务信息，可以采用上述第一方面及其可能的设计中的方案实现事件的上报，并获取对应的有益效果，因此也应该包括在本申请的保护范围之内。In a possible design, the first information includes at least one of the following information: service quality QoS monitoring request information, QoS notification control request information, and location request information. Based on this solution, a specific example of the second information is provided, that is, the second information may be information for making a QoS monitoring request, or information for a QoS notification control request, or information for a location request of a terminal device. It should be understood that the QoS-related information is service-related information, while the location request information is non-service-related information. Therefore, for other service information and non-service information, the solutions in the above-mentioned first aspect and its possible designs can be adopted. It realizes the reporting of events and obtains corresponding beneficial effects, so it should also be included in the protection scope of this application.

第十七方面，提供一种事件通知装置，该装置可以包括接收单元和发送单元。接收单元，用于接收第一信息，第一事件通知地址以及第二事件通知地址，第一信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。第一事件通知地址为接收第一事件的事件通知信息的目的地址，目的地址为应用对应应用功能AF的地址。第二事件通知地址是与第一用户面网元对应的本地能力开放网元的地址。发送单元，用于通过第二事件通知地址对应的本地能力开放网元，向第一事件通知地址发送第二信息，第二信息包括第一事件的事件通知信息。A seventeenth aspect provides an event notification apparatus, which may include a receiving unit and a sending unit. The receiving unit is configured to receive first information, a first event notification address and a second event notification address, where the first information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses an application server of an application. The first event notification address is a destination address for receiving event notification information of the first event, and the destination address is an address of the application corresponding to the application function AF. The second event notification address is the address of the local capability opening network element corresponding to the first user plane network element. The sending unit is configured to send second information to the first event notification address through the local capability opening network element corresponding to the second event notification address, where the second information includes event notification information of the first event.

在一种可能的设计中，第一信息还包括：通知关联标识,通知关联标识用于将第一事件的事件通知信息与事件通知地址关联，第二信息还包括通知关联标识。In a possible design, the first information further includes a notification association identifier, the notification association identifier is used to associate the event notification information of the first event with the event notification address, and the second information further includes a notification association identifier.

在一种可能的设计中，第一信息至少包括以下信息之一：服务质量QoS监控请求信息，QoS通知控制请求信息，以及位置请求信息。In a possible design, the first information includes at least one of the following information: service quality QoS monitoring request information, QoS notification control request information, and location request information.

第十八方面，提供一种用户面功能UPF实体，UPF实体包括一个或多个处理器和一个或多个存储器。一个或多个存储器与一个或多个处理器耦合，一个或多个存储器存储有计算机指令。当一个或多个处理器执行计算机指令时，使得UPF实体执行如第十六方面及其可能的世界中任一项所述的事件通知方法。An eighteenth aspect provides a user plane function UPF entity, where the UPF entity includes one or more processors and one or more memories. One or more memories are coupled to the one or more processors, and the one or more memories store computer instructions. The computer instructions, when executed by one or more processors, cause a UPF entity to perform the event notification method of any one of the sixteenth aspect and its possible worlds.

第十九方面，提供一种计算机可读存储介质，该计算机可读存储介质包括计算机指令，当该计算机指令运行时，执行如第十六方面及其可能的实现方式中任一项所述的事件通知方法。A nineteenth aspect provides a computer-readable storage medium, the computer-readable storage medium includes computer instructions, when the computer instructions are executed, execute the sixteenth aspect and any one of its possible implementations. Event notification method.

第二十方面，提供一种芯片***，该芯片包括处理电路和接口。该处理电路用于从存储介质中调用并运行该存储介质中存储的计算机程序，以执行如第十六方面及其可能的实现方式中任一项所述的事件通知方法。In a twentieth aspect, a chip system is provided, the chip includes a processing circuit and an interface. The processing circuit is configured to call and run the computer program stored in the storage medium from the storage medium, so as to execute the event notification method according to any one of the sixteenth aspect and its possible implementation manners.

应当理解的是，上述第十七方面，第十八方面，第十九方面，以及第二十方面提供的方案，均能够对应到第十六方面或其可能的设计中，因此能够获取的有益效果类似，此处不再赘述。It should be understood that the solutions provided in the seventeenth aspect, the eighteenth aspect, the nineteenth aspect, and the twentieth aspect can all correspond to the sixteenth aspect or its possible designs, and thus can obtain beneficial benefits The effect is similar and will not be repeated here.

第二十一方面，提供一种通信***，***包括：第一网元，第二网元，第三网元以及第四网元。第一网元，用于发送第一信息和第二信息，第一信息包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址，网络接入标识用于指示应用的应用服务器的位置，事件通知地址为接收事件通知信息的目的地址，目的地址为应用对应的本地能力开放网元的地址或应用功能AF的地址。第二信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。第二网元，用于接收第一信息和第二信息。发送第三信息和第一信息，其中，第三信息根据第二信息确定，用于订阅第一事件。第三网元，用于接收第一信息和第三信息。为终端设备选择第一用户面网元，第一用户面网元对应第一数据网络接入标识，至少一个数据网络接入标识包含第一数据网络接入标识。发送第四信息，以及第一事件通知地址。其中，第四信息根据第三信息确定，用于订阅第一事件。第一事件通知地址根据第一数据网络接入标识，至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址确定。第四网元，用于接收第四信息和第一事件通知地址。向第一事件通知地址发送第五信息，第五信息包括第一事件的事件通知信息。A twenty-first aspect provides a communication system, where the system includes: a first network element, a second network element, a third network element, and a fourth network element. The first network element is used to send first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, and the network access identifier is used to indicate an application The location of the application server, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability open network element corresponding to the application or the address of the application function AF. The second information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application. The second network element is configured to receive the first information and the second information. Sending third information and first information, wherein the third information is determined according to the second information and used for subscribing to the first event. The third network element is configured to receive the first information and the third information. A first user plane network element is selected for the terminal device, the first user plane network element corresponds to the first data network access identifier, and at least one data network access identifier includes the first data network access identifier. Send the fourth message, and the first event notification address. The fourth information is determined according to the third information and is used to subscribe to the first event. The first event notification address is determined according to the first data network access identifier, at least one data network access identifier, and an event notification address corresponding to the at least one data network access identifier. The fourth network element is configured to receive the fourth information and the first event notification address. Send fifth information to the first event notification address, where the fifth information includes event notification information of the first event.

在一种可能的设计中，第一网元为AF网元，第二网元为策略控制功能PCF网元，第三网元为会话管理功能SMF网元，第四网元为用户面功能UPF网元。In a possible design, the first network element is an AF network element, the second network element is a policy control function PCF network element, the third network element is a session management function SMF network element, and the fourth network element is a user plane function UPF network element.

应当理解的是，上述第二十一方面提供的通信***及其可能的设计的技术特征能够对应到上述第一方面及其可能的设计，第六方面及其可能的设计，第十一方面及其可能的设计，和/或第十六方面及其可能的设计中任一项所述的方法，因此能够达到相同的有益效果。It should be understood that the technical features of the communication system and its possible designs provided by the above twenty-first aspect can correspond to the above-mentioned first aspect and its possible designs, the sixth aspect and its possible designs, the eleventh aspect and The possible designs thereof, and/or the method described in any one of the sixteenth aspect and the possible designs thereof, can therefore achieve the same beneficial effects.

附图说明Description of drawings

图1为一种网络架构的示意图；1 is a schematic diagram of a network architecture;

图2为本申请实施例提供的一种通信架构的逻辑示意图；FIG. 2 is a schematic logical diagram of a communication architecture provided by an embodiment of the present application;

图3为本申请实施例提供的一种通信架构的部署示意图；FIG. 3 is a schematic diagram of deployment of a communication architecture provided by an embodiment of the present application;

图4为本申请实施例提供的又一种通信架构的部署示意图；FIG. 4 is a schematic diagram of deployment of another communication architecture provided by an embodiment of the present application;

图5A为本申请实施例提供的又一种通信架构的部署示意图；5A is a schematic diagram of deployment of another communication architecture provided by an embodiment of the present application;

图5B为申请实施例提供的一种事件通知方法的流程示意图；5B is a schematic flowchart of an event notification method provided by an embodiment of the application;

图6为本申请实施例提供的又一种事件通知方法的流程示意图；FIG. 6 is a schematic flowchart of another event notification method provided by an embodiment of the present application;

图7为本申请实施例提供的又一种事件通知方法的流程示意图；FIG. 7 is a schematic flowchart of another event notification method provided by an embodiment of the present application;

图8为本申请实施例提供的又一种事件通知方法的流程示意图；FIG. 8 is a schematic flowchart of another event notification method provided by an embodiment of the present application;

图9为本申请实施例提供的又一种事件通知方法的流程示意图；FIG. 9 is a schematic flowchart of another event notification method provided by an embodiment of the present application;

图10为本申请实施例提供的一种PSA重选的示意图；Figure 10 is a schematic diagram of a PSA reselection provided in the embodiment of the present application;

图11为本申请实施例提供的又一种事件通知方法的流程示意图；FIG. 11 is a schematic flowchart of another event notification method provided by an embodiment of the present application;

图12为本申请实施例提供的一种事件通知装置的组成示意图；FIG. 12 is a schematic diagram of the composition of an event notification device according to an embodiment of the present application;

图13为本申请实施例提供的一种应用功能实体的组成示意图；FIG. 13 is a schematic diagram of the composition of an application functional entity according to an embodiment of the present application;

图14为本申请实施例提供的一种芯片***的组成示意图；FIG. 14 is a schematic diagram of the composition of a chip system according to an embodiment of the present application;

图15为本申请实施例提供的又一种事件通知装置的组成示意图；FIG. 15 is a schematic diagram of the composition of another event notification apparatus provided by an embodiment of the present application;

图16为本申请实施例提供的一种策略控制功能实体的组成示意图；FIG. 16 is a schematic diagram of the composition of a policy control functional entity according to an embodiment of the present application;

图17为本申请实施例提供的又一种芯片***的组成示意图；FIG. 17 is a schematic diagram of the composition of another chip system provided by an embodiment of the present application;

图18为本申请实施例提供的又一种事件通知装置的组成示意图；FIG. 18 is a schematic diagram of the composition of another event notification apparatus provided by an embodiment of the present application;

图19为本申请实施例提供的一种会话管理功能实体的组成示意图；19 is a schematic diagram of the composition of a session management functional entity provided by an embodiment of the present application;

图20为本申请实施例提供的又一种芯片***的组成示意图；FIG. 20 is a schematic diagram of the composition of another chip system provided by an embodiment of the present application;

图21为本申请实施例提供的又一种事件通知装置的组成示意图；FIG. 21 is a schematic diagram of the composition of another event notification apparatus provided by an embodiment of the present application;

图22为本申请实施例提供的一种用户面功能实体的组成示意图；FIG. 22 is a schematic diagram of the composition of a user plane functional entity according to an embodiment of the present application;

图23为本申请实施例提供的又一种芯片***的组成示意图。FIG. 23 is a schematic diagram of the composition of another chip system provided by an embodiment of the present application.

具体实施方式detailed description

目前，在终端设备移动之后，为了实现业务访问的路径优化，终端设备可以重新选择部署在本地的UPF以及应用服务器。如果应用服务器依然需要获取事件报告，就需要重新订阅该事件。这就会导致UPF获取并反馈事件报告的延迟。Currently, after the terminal device moves, in order to optimize the service access path, the terminal device can reselect the locally deployed UPF and the application server. If the application server still needs to get the event report, it needs to re-subscribe to the event. This can cause delays in UPF getting and feeding back incident reports.

为了解决上述问题，本申请实施例提供一种事件通知方法，能够在由于终端设备移动等原因导致UPF发生变化时，核心网元(如会话管理功能)能够根据应用服务器为其配置的新的UPF对应的事件通知地址，指示UPF将获取的事件报告上报给对应的地址。这样就不需要应用服务器再次通过AF，PCF，SMF重新下发事件订阅信息，由此能够显著地节省不同网元之间的通信次数，在节省信令开销的同时，保证事件报告的快速反馈。In order to solve the above problem, the embodiment of the present application provides an event notification method, which can enable the core network element (such as the session management function) to be able to configure the new UPF according to the new UPF configured by the application server when the UPF changes due to the movement of the terminal device. The corresponding event notification address, instructing the UPF to report the acquired event report to the corresponding address. In this way, the application server does not need to re-issue the event subscription information through AF, PCF, and SMF again, which can significantly save the number of communications between different network elements, save signaling overhead, and ensure fast feedback of event reports.

以下结合附图对本申请实施例提供的技术方案进行详细说明。The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

首先对该方法应用的环境进行说明。First, the environment in which the method is applied will be described.

请参考图2，为本申请实施例提供的一种通信架构的逻辑示意图。Please refer to FIG. 2 , which is a schematic diagram of a communication architecture provided by an embodiment of the present application.

如图2所示，该通信架构中可以包括终端设备，RAN，UPF，AMF，SMF，PCF以及AF。As shown in FIG. 2 , the communication architecture may include terminal equipment, RAN, UPF, AMF, SMF, PCF and AF.

应用功能(application function，AF)。该AF可以为应用服务器的对应的一个功能实体。在不同的实现方式中，一个应用服务器可以对应一个或多个AF。示例性的，在本申请实施例中，应用服务器可以通过AF下发事件订阅信息，用于订阅对应UPF获取并上报对应的事件报告。在一些实现方式中，应用服务器还可以通过AF下发包括至少一个数据网络接入标识和与该至少一个数据网络接入标识对应的事件通知地址的地址对应信息。需要说明的是，在本申请中，应用服务器可以通过同一个AF下发上述事件订阅信息，与地址对应信息。该在另一些实现方式中，应用服务器还可通过不同的AF下发上述事件订阅信息，与地址对应信息。当然，应用服务器接收事件报告的AF可以与发送事件订阅信息和/或地址对应信息的AF相同，也可以不同。本申请实施例对此不作限制。Application function (AF). The AF may be a corresponding functional entity of the application server. In different implementations, one application server may correspond to one or more AFs. Exemplarily, in this embodiment of the present application, the application server may issue event subscription information through the AF, which is used to subscribe the corresponding UPF to acquire and report the corresponding event report. In some implementation manners, the application server may further issue address correspondence information including at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier through the AF. It should be noted that, in this application, the application server may deliver the above-mentioned event subscription information through the same AF, and the information corresponding to the address. In other implementation manners, the application server may also deliver the above-mentioned event subscription information through different AFs, and the information corresponding to the address. Certainly, the AF for receiving the event report by the application server may be the same as or different from the AF for sending the event subscription information and/or address correspondence information. This embodiment of the present application does not limit this.

策略控制功能(policy control function，PCF)。该PCF可以用于根据来自AF的消息定制对应的策略与计费控制(policy and charging control，PCC)规则。并将该PCC规则下发给其他网元，以便其他网元能够根据该PCC规则执行对应的事件。示例性的，在本申请实施例中，该PCF可以用于根据来自AF的地址对应信息定制包括地址对应关系的PCC规则，并将该PCC规则下发给其他网元，以便其他网元能够根据该PCC规则获知事件报告通知地址与数据网络接入标识的对应关系。该PCF还可用于根据来自AF(或网络曝光功能(network exposure function，NEF))的事件订阅信息，定制对应的PCC规则，或者对已有的PCC规则进行更新，并将该PCC规则下发给其他网元，以便其他网元能够根据该PCC规则执行对应的事件并向对应的地址反馈事件报告。Policy control function (PCF). The PCF can be used to customize corresponding policy and charging control (policy and charging control, PCC) rules according to the message from the AF. The PCC rule is issued to other network elements, so that other network elements can execute corresponding events according to the PCC rule. Exemplarily, in this embodiment of the present application, the PCF may be used to customize a PCC rule including an address correspondence according to the address correspondence information from the AF, and issue the PCC rule to other network elements, so that other network elements can The PCC rule learns the correspondence between the event report notification address and the data network access identifier. The PCF can also be used to customize the corresponding PCC rules according to the event subscription information from AF (or network exposure function (NEF)), or update existing PCC rules, and deliver the PCC rules to other network elements, so that other network elements can execute the corresponding event according to the PCC rule and feed back the event report to the corresponding address.

会话管理功能(session management function，SMF)。该SMF主要负责与分离的数据面交互，创建、更新和删除PDU会话，并管理与UPF的会话环境(session context)。示例性的，在本申请实施例中，该SMF可以用于接收PCF的PCC规则，并根据该PCC规则执行对应的事件。例如，该SMF可以用于根据PCC规则中包括的数据网络接入标识为终端设备选取对应的UPF。其中，在不同实施例中，SMF可以将与终端设备距离最近的UPF作为与该终端设备建立PDU会话的协议数据单元锚点(PDU Session Anchor，PSA)。在另一些实施例中，SMF还可以根据其他规则为终端设备配置PSA，例如SMF可以根据历史通信质量为终端设备配置PSA。本申请实施例对此不作限制。SMF还可以用于接收包括地址对应信息以及事件订阅信息的PCC规则，根据当前为终端设备选择的PSA选择确定对应的事件报告通知地址，并将该地址与事件订阅信息发送给对应的PSA，以便PSA进行对应的操作。Session management function (session management function, SMF). The SMF is primarily responsible for interacting with the separate data plane, creating, updating and deleting PDU sessions, and managing the session context with the UPF. Exemplarily, in this embodiment of the present application, the SMF may be configured to receive a PCC rule of the PCF, and execute a corresponding event according to the PCC rule. For example, the SMF may be used to select the corresponding UPF for the terminal device according to the data network access identifier included in the PCC rule. Wherein, in different embodiments, the SMF may use the UPF closest to the terminal device as a protocol data unit anchor (PDU Session Anchor, PSA) for establishing a PDU session with the terminal device. In other embodiments, the SMF can also configure the PSA for the terminal device according to other rules, for example, the SMF can configure the PSA for the terminal device according to the historical communication quality. This embodiment of the present application does not limit this. SMF can also be used to receive PCC rules including address correspondence information and event subscription information, determine the corresponding event report notification address according to the PSA currently selected for the terminal device, and send the address and event subscription information to the corresponding PSA, so that PSA performs corresponding operations.

核心网接入和移动性管理功能(core access and mobility management function，AMF)。示例性的，该AMF主要负责终端设备的接入认证、移动性管理、各个功能网元间的信令交互等工作，如：对用户的注册状态、用户的连接状态、用户注册入网、跟踪区更新、小区切换用户认证和密钥安全等进行管理。Core network access and mobility management function (core access and mobility management function, AMF). Exemplarily, the AMF is mainly responsible for the access authentication of terminal equipment, mobility management, and signaling interaction between various functional network elements, such as the registration status of the user, the connection status of the user, the user registration and access to the network, and the tracking area. Update, cell handover user authentication and key security are managed.

用户面功能(user plane function，UPF)。示例性的，UPF可以根据SMF发送的信息，与对应的终端设备建立PDU会话，以实现分组路由和转发，数据包检查，用户面部分策略规则实施等功能。在本申请实施例中，UPF可以根据来自SMF的事件订阅信息，执行对应的事件，并获取对应的事件报告。UPF还可以通过SMF发送的事件报告通知地址，反馈该事件报告，以便在UE移动后出现UPF重选时，AF不需要重新下发事件订阅信息即可，应用服务器也可获取对应的事件报告。User plane function (UPF). Exemplarily, the UPF may establish a PDU session with a corresponding terminal device according to the information sent by the SMF, so as to implement functions such as packet routing and forwarding, data packet inspection, and implementation of some policy rules on the user plane. In this embodiment of the present application, the UPF may execute the corresponding event according to the event subscription information from the SMF, and obtain the corresponding event report. The UPF can also feed back the event report through the event report notification address sent by the SMF, so that when the UPF reselection occurs after the UE moves, the AF does not need to re-issue the event subscription information, and the application server can also obtain the corresponding event report.

终端设备可以包括用户设备(user equipment，UE)或者移动台(mobile station，MS)或者移动终端装置(mobile terminal，MT)等。作为一种示例，该终端设备可以是手机(mobile phone)、平板电脑或带无线收发功能的电脑，还可以是虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制中的无线终端设备、无人驾驶中的无线终端设备、远程医疗中的无线终端设备、智能电网中的无线终端设备、智慧城市(smart city)中的无线终端设备、智能家居、车载终端设备。在本示例中，终端设备可以通过与UPF建立PDU会话，实现与数据网络(data net，DN)的通信。以下以终端设备为UE为例进行说明。The terminal equipment may include a user equipment (user equipment, UE) or a mobile station (mobile station, MS) or a mobile terminal device (mobile terminal, MT) and the like. As an example, the terminal device may be a mobile phone (mobile phone), a tablet computer, or a computer with a wireless transceiver function, and may also be a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device , wireless terminal equipment in industrial control, wireless terminal equipment in unmanned driving, wireless terminal equipment in telemedicine, wireless terminal equipment in smart grid, wireless terminal equipment in smart city, smart home, vehicle Terminal Equipment. In this example, the terminal device can communicate with a data network (data net, DN) by establishing a PDU session with the UPF. The following description is given by taking the terminal device as the UE as an example.

无线接入网(radio access network，RAN)，为提供无线接入服务的接入网元。例如，在5G通信***中，该网元可以称为NR-RAN。在一些实现方式中，该RAN可以通过基站实现。例如，在5G通信***中，该RAN可以为向终端设备提供新空口(new radio，NR)用户面和控制面协议终端的节点，并且经由NG接口连接到5G核心网。该RAN还可以为向终端设备提供演进型通用陆地无线接入网(evolved universal terrestrial radio access network，E-UTRAN)用户面和控制面协议终端的节点，并且经由NG接口连接到5G核心网。A radio access network (RAN) is an access network element that provides wireless access services. For example, in a 5G communication system, this network element may be called NR-RAN. In some implementations, the RAN may be implemented by a base station. For example, in a 5G communication system, the RAN can be a node that provides a new radio (NR) user plane and control plane protocol terminals to terminal equipment, and is connected to the 5G core network via an NG interface. The RAN can also be a node that provides terminal equipment with Evolved Universal Terrestrial Radio Access Network (E-UTRAN) user plane and control plane protocol terminals, and is connected to the 5G core network via the NG interface.

为了扩展AF的网络功能，在一些实施例中，该网络架构还可以包括NEF。该NEF为一种能力开放网元的示例，在其他实现方式中，也可通过其他能力开放网元替换该NEF。示例性的，该NEF可以设置在AF前端，用于对AF发出/接收的信息进行二级处理，以便能够在保证AF通信功能的同时，对AF进行地址保护等。在本申请实施例中，NEF可以设置在本地网路中，每个NEF可以配置有一个地址(如称为NEF地址)，NEF可以通过对应的NEF地址接收来自UPF上报的事件报告。当该事件报告对应的事件订阅信息是由NEF后端的AF订阅时，该NEF还可用于将接收到的事件报告，发送给与该本地NEF对应的AF。以实现事件报告向应用服务器是反馈。在另一些实施例中，在中心网络中也可设置NEF，起到与本地NEF类似的功能。应当理解的是，在一些实现方式中，可以同时在中心网络以及本地网络中设置不同的NEF，以实现多个等级的网络功能扩展。To extend the network functionality of the AF, in some embodiments, the network architecture may also include the NEF. The NEF is an example of a capability opening network element, and in other implementation manners, the NEF can also be replaced by other capability opening network elements. Exemplarily, the NEF may be set at the front end of the AF to perform secondary processing on the information sent/received by the AF, so as to ensure the AF communication function and at the same time perform address protection for the AF and the like. In this embodiment of the present application, the NEF may be set in the local network, each NEF may be configured with an address (for example, called an NEF address), and the NEF may receive the event report reported by the UPF through the corresponding NEF address. When the event subscription information corresponding to the event report is subscribed by the AF of the NEF backend, the NEF can also be used to send the received event report to the AF corresponding to the local NEF. To implement event reporting is feedback to the application server. In other embodiments, NEFs may also be set up in the central network to perform similar functions to local NEFs. It should be understood that, in some implementation manners, different NEFs may be set in the central network and the local network at the same time, so as to realize network function expansion at multiple levels.

具体的，作为可能的部署方式，图3-图5B示出了基于如图2所示的逻辑示意图的具体部署方法。其中，可以通过设置多个层侧的数据中心(data center，DC)实现数据的分层管理。例如，该可以设置覆盖较大区域的中央DC(central DC)，在该中央DC的覆盖区域中还可包括一个或多个本地DC(local DC)。Specifically, as a possible deployment manner, FIGS. 3-5B show a specific deployment method based on the schematic diagram shown in FIG. 2 . Among them, the hierarchical management of data can be realized by setting up multiple data centers (data centers, DCs) on the layer side. For example, a central DC (central DC) covering a larger area may be set, and one or more local DCs (local DC) may also be included in the coverage area of the central DC.

在一种可能的部署中，如图3所示，在中央DC可以设置AMF，SMF，PCF以及NEF。需要说明的是，在不同的位置还可以部署一个或多个本地DC。为了便于说明，本申请实施例中以中央DC和一个本地DC为例。在该本地DC中可以设置UPF，以及AF。本申请实施例中，设置在本地DC的UPF可以称为本地UPF(local UPF)，设置在本地DC的AF可以称为本地AF(local AF)。In one possible deployment, as shown in Figure 3, AMF, SMF, PCF and NEF can be set up in the central DC. It should be noted that one or more local DCs may also be deployed in different locations. For convenience of description, the embodiment of the present application uses a central DC and a local DC as an example. The UPF, as well as the AF, can be set in this local DC. In this embodiment of the present application, the UPF set in the local DC may be referred to as a local UPF (local UPF), and the AF set in the local DC may be referred to as a local AF (local AF).

示例性的，在如图3所示的部署中，以AF下发QoS监控请求信息为例对各个网元的数据交互进行示例性说明。AF可以通过N33接口向NEF下发包括该QoS监控请求信息的消息，NEF可以通过N6接口将该消息发送给PCF。PCF可定制对应的PCC规则，并通过N7接口下发给SMF。SMF可以通过N11接口将相关信令下发给AMF，以便AMF通过N1接口与终端设备进行相应的信令交互，和/或通过N2接口与RAN进行相应的信令交互。SMF还可通过N4接口将QoS监控请求信息以及该QoS监控请求信息对应的事件报告通知地址(如AF的地址)发送给UPF。UPF根据该QoS监控请求信息进行对应的监控，以获取事件报告。接着，UPF可以通过N4a接口将该事件报告反馈给具有对应事件报告通知地址的AF。Exemplarily, in the deployment shown in FIG. 3 , the data interaction of each network element is exemplarily described by taking the AF delivering the QoS monitoring request information as an example. The AF can deliver a message including the QoS monitoring request information to the NEF through the N33 interface, and the NEF can send the message to the PCF through the N6 interface. The PCF can customize the corresponding PCC rules and deliver them to the SMF through the N7 interface. The SMF can deliver the relevant signaling to the AMF through the N11 interface, so that the AMF can perform corresponding signaling interaction with the terminal device through the N1 interface, and/or perform corresponding signaling interaction with the RAN through the N2 interface. The SMF may also send the QoS monitoring request information and the event report notification address (such as the address of the AF) corresponding to the QoS monitoring request information to the UPF through the N4 interface. The UPF performs corresponding monitoring according to the QoS monitoring request information to obtain an event report. Then, the UPF can feed back the event report to the AF with the corresponding event report notification address through the N4a interface.

结合上述说明，UPF在发送事件报告时，根据SMF下发的事件通知地址选取对应的传输通道。在如图3所示的部署中，是以SMF下发的事件通知地址与发出QoS监控请求信息的AF相同为例的，因此UPF可以将该事件报告反馈给该AF。在另一些实现方式中，当SMF下发的事件通知地址与发出QoS监控请求信息的AF不同，则UPF根据该事件通知地址将相应的事件报告发送给对应的网元。In combination with the above description, when sending the event report, the UPF selects the corresponding transmission channel according to the event notification address sent by the SMF. In the deployment shown in FIG. 3 , it is taken as an example that the event notification address delivered by the SMF is the same as the AF that sends the QoS monitoring request information, so the UPF can feed back the event report to the AF. In other implementations, when the event notification address delivered by the SMF is different from the AF that sent the QoS monitoring request information, the UPF sends the corresponding event report to the corresponding network element according to the event notification address.

在另一些部署方式中，如图4所示，还可以将NEF设置在本地DC中。这样，在 UPF获取事件报告后，可以通过N4a接口将该事件报告发送给本地DC中的NEF，以便NEF将该事件报告发送给对应的AF。In other deployment methods, as shown in Figure 4, the NEF can also be set in the local DC. In this way, after the UPF obtains the event report, it can send the event report to the NEF in the local DC through the N4a interface, so that the NEF can send the event report to the corresponding AF.

在另一些部署方式中，如图5A所示，可以同时部署多个NEF以实现网络功能的多级扩展。其中，图5A是以分别在本地DC中以及中央DC中设置一个NEF(如在本地DC中设置NEF1，在中央DC中设置NEF2)为例。这样，AF在下发事件订阅信息(如QoS监控请求信息)时，可以通过N33接口将该信息发送给NEF1，NEF1可以将该信息转发(或在对其进行转码后发送)通过N33a接口发送给NEF2。以便NEF2可以将该信息传递下去直至发布给UPF。UPF在获取对应的事件报告后，可以通过N4a接口将该事件报告发送给NEF1。以便NEF1将该事件报告发送给对应的应用服务器。In other deployment manners, as shown in FIG. 5A , multiple NEFs can be deployed simultaneously to achieve multi-level expansion of network functions. 5A is an example of setting one NEF in the local DC and the central DC respectively (eg, setting NEF1 in the local DC and setting NEF2 in the central DC). In this way, when AF sends event subscription information (such as QoS monitoring request information), it can send the information to NEF1 through the N33 interface, and NEF1 can forward the information (or send it after transcoding it) through the N33a interface. NEF2. so that NEF2 can pass this information on until it is released to the UPF. After obtaining the corresponding event report, the UPF can send the event report to NEF1 through the N4a interface. So that NEF1 sends the event report to the corresponding application server.

本申请实施例提供的事件通知方法，可以应用于4G/5G业务能力互通的网络架构，也可以适用于未来第六代(6th generation，6G)通信***或者其他通信***，本申请对此不作限制。示例性的，该方法可以应用于具有如图2所示的逻辑示意的通信网络中，还可应用于如图3或图4或图5A所示的部署的通信网络中。The event notification method provided in the embodiment of this application can be applied to a network architecture of 4G/5G service capability interworking, and can also be applied to a future 6th generation (6G) communication system or other communication systems, which is not limited in this application. . Exemplarily, the method can be applied to a communication network having the logical schematic shown in FIG. 2 , and can also be applied to a deployed communication network as shown in FIG. 3 or FIG. 4 or FIG. 5A .

以下对本申请实施例提供的事件通知方法进行详细说明。The event notification method provided by the embodiment of the present application will be described in detail below.

请参考图5B，为本申请实施例提供的一种事件通知方法的流程示意图。该方法可以应用于如图3或图4或图5A所示的通信网络中，或者，该方法也可应用于其他具有如图2所示的逻辑是以的通信网络中。以下以该方法应用于如图4所示的通信网络为例进行说明。Please refer to FIG. 5B , which is a schematic flowchart of an event notification method provided by an embodiment of the present application. The method may be applied to the communication network as shown in FIG. 3 or FIG. 4 or FIG. 5A , or the method may also be applied to other communication networks having the logic shown in FIG. 2 . The following description will be given by taking the method applied to the communication network as shown in FIG. 4 as an example.

如图5B所示，该方法可以包括S501-S508。As shown in FIG. 5B, the method may include S501-S508.

S501、AF发送第一信息和第二信息。S501. The AF sends the first information and the second information.

其中，该第一信息可以包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址，网络接入标识用于指示应用的应用服务器的位置，事件通知地址为接收事件通知信息的目的地址，目的地址为应用对应的本地能力开放网元的地址或应用功能AF的地址。The first information may include at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, where the network access identifier is used to indicate the location of the application server of the application, and the event notification address is the receiving event The destination address of the notification information, where the destination address is the address of the local capability open network element corresponding to the application or the address of the application function AF.

作为一种示例，该数据网络接入标识可以为数据网络访问标识符(data network access identifier，DNAI)。应当理解的是，DNAI可以用于指示应用的应用服务器的位置。当应用部署了多个应用服务器时，每个位置的应用服务器可以对应与一个DNAI。应当理解的是，事件报告一般需要被上报给订阅对应事件的AF或NEF。结合图4，在本地DC中应用的AF以及NEF一般为对应设置的，而应用服务器与AF也可存在对应关系。因此，一个应用服务器对应的DNAI就与AF(和/或NEF)存在对应的关系。在本示例中，可以建立DNAI与AF或NEF接收事件报告(或称为事件通知信息)的地址(如称为目的地址)的对应关系，即上述至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址。并携带在第一信息中，发送给其他核心网元，如PCF等。本申请实施例中，可以将数据网络接入标识与对应的事件通知地址的对应关系称为地址对应信息。As an example, the data network access identifier may be a data network access identifier (data network access identifier, DNAI). It should be understood that the DNAI can be used to indicate the location of the application server of the application. When the application deploys multiple application servers, the application server at each location may correspond to a DNAI. It should be understood that event reports generally need to be reported to the AF or NEF that subscribes to the corresponding event. Referring to FIG. 4 , the AF and NEF applied in the local DC are generally set correspondingly, and there may also be a corresponding relationship between the application server and the AF. Therefore, a DNAI corresponding to an application server has a corresponding relationship with AF (and/or NEF). In this example, a corresponding relationship between the DNAI and the address (eg, the destination address) at which the AF or NEF receives the event report (or event notification information) can be established, that is, the above-mentioned at least one data network access identifier and at least one data network access identifier can be established. The event notification address corresponding to the network access identifier. It is carried in the first information and sent to other core network elements, such as PCF. In this embodiment of the present application, the correspondence between the data network access identifier and the corresponding event notification address may be referred to as address correspondence information.

第二信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。需要说明的是，该第二信息可以用于订阅为与业务相关的事件。示例性的，在一些实现方式中，该第二信息可以包括服务质量QoS监控请求信息，和/或QoS通知控制请求信息。在另一些实施例中，该第二信息也可以用于订阅为与业务不相关的事件。示例性的，该第二信息可以包括位置请求信息。The second information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application. It should be noted that the second information can be used to subscribe to service-related events. Exemplarily, in some implementations, the second information may include quality of service QoS monitoring request information, and/or QoS notification control request information. In other embodiments, the second information may also be used to subscribe to events not related to services. Exemplarily, the second information may include location request information.

另外，第一信息和第二信息的下发，可以是应用服务器控制同一个AF在一个消息流中下发的，也可以是应用服务器控制同一个AF在不同消息流中下发的，也可以是应用服务器控制不同AF在不同消息流中下发的。本申请实施例对此不作限制。In addition, the delivery of the first information and the second information may be delivered by the application server controlling the same AF in one message stream, or by the application server controlling the same AF to deliver in different message streams, or It is sent by the application server to control different AFs in different message streams. This embodiment of the present application does not limit this.

在本申请的一些实施例中，该第二信息还可以包括通知关联标识,通知关联标识用于将第一事件的事件通知信息与第一信息关联。应当理解的是，由于第一信息和第二信息可以在不同的消息流中下发，因此，需要通过上述通知关联标识，使得其他核心网元(如PCF，SMF等)能够知晓第一信息中的地址对应信息与第二信息中订阅的第一事件之间的关联性。In some embodiments of the present application, the second information may further include a notification association identifier, where the notification association identifier is used to associate the event notification information of the first event with the first information. It should be understood that, since the first information and the second information can be delivered in different message flows, the above-mentioned notification association identifier is required to enable other core network elements (such as PCF, SMF, etc.) to know the information in the first information. The correlation between the address correspondence information and the first event subscribed in the second information.

S502、PCF接收第一信息和第二信息。S502. The PCF receives the first information and the second information.

该第一信息包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址，网络接入标识用于指示应用的应用服务器的位置，事件通知地址为接收事件通知信息的目的地址，目的地址为应用对应的本地能力开放网元的地址或应用功能AF的地址。The first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, where the network access identifier is used to indicate the location of the application server of the application, and the event notification address is the one that receives the event notification information. Destination address, where the destination address is the address of the local capability open network element corresponding to the application or the address of the application function AF.

第二信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。The second information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application.

S503、PCF发送第三信息和第一信息。S503. The PCF sends the third information and the first information.

其中，第三信息根据第二信息确定，用于订阅第一事件。应当理解的是，在一些实现方式中，PCF接收到第二信息后，可以对第二信息进行一定处理后再发送给其他网元(如SMF)。作为一种示例，PCF可以将第一信息中包括的地址对应信息以及第二信息中指示的订阅第一事件的对应信息，封装在PCC规则中，并将PCC规则下发给SMF。其中，PCC规则中的用于指示订阅第一事件的信息可以与第二信息相同，即第三信息与第二信息相同。PCC规则中用于指示定于第一事件的信息也可与第二信息不同，即第三信息与第二信息不同。本申请实施例对于第三信息的具体形式不做限制。The third information is determined according to the second information and is used to subscribe to the first event. It should be understood that, in some implementation manners, after receiving the second information, the PCF may perform certain processing on the second information before sending it to other network elements (eg, SMF). As an example, the PCF may encapsulate the address correspondence information included in the first information and the corresponding information for subscribing to the first event indicated in the second information into a PCC rule, and deliver the PCC rule to the SMF. The information in the PCC rule for indicating subscription to the first event may be the same as the second information, that is, the third information is the same as the second information. The information used to indicate that the first event is scheduled in the PCC rule may also be different from the second information, that is, the third information is different from the second information. This embodiment of the present application does not limit the specific form of the third information.

在一些实施例中，当PCF接收到的第二信息中还包括第一关联标识时，PCF可以将该第一关联标识一同下发给SMF。示例性的，PCF可以将该第一关联标识携带在PCC规则中下发给SMF。In some embodiments, when the second information received by the PCF further includes the first association identifier, the PCF may deliver the first association identifier to the SMF together. Exemplarily, the PCF may carry the first association identifier in the PCC rule and deliver it to the SMF.

需要说明的是，上述说明是以PCF将第一信息，第三信息以及第一关联标识封装在PCC规则中下发为例进行说明的，在其他一些实现方式中，PCF还可以通过其他方式将第一信息，第三信息以及第一关联标识下发给其他网元(如SMF)。其中，PCF可以在同一个消息流中发送第一信息，第三信息以及第一关联标识，PCF也可在不同的消息流中分别发送第一信息，第三信息以及第一关联标识。本申请实施例对于PCF下发第一信息，第三信息以及第一关联标识的方式不作限制。It should be noted that the above description is described by taking the PCF encapsulating the first information, the third information and the first association identifier in the PCC rule as an example for delivery. The first information, the third information and the first association identifier are delivered to other network elements (eg SMF). The PCF may send the first information, the third information and the first association identifier in the same message flow, and the PCF may also send the first information, the third information and the first association identifier respectively in different message flows. This embodiment of the present application does not limit the manner in which the PCF delivers the first information, the third information, and the first association identifier.

S504、SMF接收第一信息和第三信息。S504. The SMF receives the first information and the third information.

第一信息包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址，网络接入标识用于指示应用的应用服务器的位置，事件通知地址为接收事件通知信息的目的地址，目的地址为应用对应的本地能力开放网元的地址或应用功能AF的地址。The first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, where the network access identifier is used to indicate the location of the application server of the application, and the event notification address is for the purpose of receiving event notification information address, and the destination address is the address of the local capability exposure network element corresponding to the application or the address of the application function AF.

第三信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。The third information is used to subscribe to the first event of the terminal device, which is a device accessing the application server of the application.

结合S503中的说明，SMF可以通过接收PCF发送的PCC规则接收该第一信息和第三信息。With reference to the description in S503, the SMF may receive the first information and the third information by receiving the PCC rule sent by the PCF.

S505、SMF为终端设备选择第一用户面网元。S505. The SMF selects the first user plane network element for the terminal device.

第一用户面网元对应第一数据网络接入标识，至少一个数据网络接入标识包含第一数据网络接入标识。The first user plane network element corresponds to the first data network access identifier, and at least one data network access identifier includes the first data network access identifier.

示例性的，SMF可以根据PCC规则中包括的DNAI，为终端设备选择对应的UPF作为PSA建立PDU会话以便该终端设备能够接入数据网络。Exemplarily, the SMF may, according to the DNAI included in the PCC rule, select a corresponding UPF as the PSA for the terminal device to establish a PDU session so that the terminal device can access the data network.

在选取确定了PSA之后，SMF可以根据PCC规则中的第一信息(其中可以包括地址对应信息)，结合当前PSA对应的DNAI，确定对应的事件通知地址。After the PSA is selected and determined, the SMF may determine the corresponding event notification address according to the first information in the PCC rule (which may include address correspondence information) in combination with the DNAI corresponding to the current PSA.

而当由于终端设备的移动等原因的导致PSA重选时，SMF可以根据PCC规则中包括的DNAI，为终端设备重新选择对应的UPF作为PSA。在确定重选的PSA后，SMF可以根据PCC规则中的第一信息(其中可以包括地址对应信息)，结合当前PSA对应的DNAI，确定对应的事件通知地址。可以看到，当出现PSA重选时，由于SMF能够知晓不同DNAI与事件通知地址之间的对应关系，因此SMF在为终端设备重选PSA后，通过该对应关系(即地址对应信息)即可确定新的PSA对应的事件通知地址，而不需要AF重新下发事件订阅信息。由此便能够极大地节省对应事件的上报时延。本示例中，可以将PSA对应的事件通知地址称为第一事件通知地址。However, when the PSA is reselected due to the movement of the terminal device, etc., the SMF can reselect the corresponding UPF as the PSA for the terminal device according to the DNAI included in the PCC rule. After determining the reselection PSA, the SMF may determine the corresponding event notification address according to the first information in the PCC rule (which may include address correspondence information) and in combination with the DNAI corresponding to the current PSA. It can be seen that when PSA reselection occurs, since SMF can know the correspondence between different DNAIs and event notification addresses, SMF can pass the correspondence (ie address correspondence information) after reselection of PSA for the terminal device. The event notification address corresponding to the new PSA is determined without the need for the AF to re-issue the event subscription information. In this way, the reporting delay of the corresponding event can be greatly reduced. In this example, the event notification address corresponding to the PSA may be referred to as the first event notification address.

需要说明的是，在另一些实施例中，可能存在事件报告需要通过其他NEF转发才能够被发送到第一事件通知地址的情况。在本示例中，SMF还可获取该转发NEF的地址(如称为第二事件通知地址)，以便将该第二事件通知地址一并下发给UPF，使得UPF可以通过该第二事件通知地址实现事件报告向第一事件通知地址的上报。It should be noted that, in other embodiments, there may be a situation that the event report needs to be forwarded by other NEFs before being sent to the first event notification address. In this example, the SMF may also obtain the address of the forwarding NEF (such as the second event notification address), so as to deliver the second event notification address to the UPF, so that the UPF can pass the second event notification address Realize the reporting of the event report to the first event notification address.

S506、SMF发送第四信息，以及第一事件通知地址。S506. The SMF sends the fourth information and the first event notification address.

其中，第一事件通知地址为接收第一事件的事件通知信息的目的地址。The first event notification address is a destination address for receiving event notification information of the first event.

第四信息可以根据第三信息确定，用于订阅第一事件。作为一种示例，第一事件通知地址可以是SMF根据第一数据网络接入标识，至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址(如上述地址对应信息)确定。The fourth information may be determined according to the third information and used for subscribing to the first event. As an example, the first event notification address may be the SMF according to the first data network access identifier, at least one data network access identifier, and an event notification address corresponding to the at least one data network access identifier (such as the above address correspondence information) Sure.

另外，类似于上述说明，在该第四信息中还可以包括通知关联标识，用于将第一事件的事件通知信息与事件通知地址关联。In addition, similar to the above description, the fourth information may further include a notification association identifier for associating the event notification information of the first event with the event notification address.

应当理解的是，当SMF确定了转发NEF的地址时(如第二事件通知地址)，则SMF可以将该第二事件通知地址下发给UPF。需要说明的是，该第四信息，第一事件通知地址以及第二事件通知地址可以是在同一个消息中下发的，也可以是在不同消息中下发的。本申请实施例对于相关信息的下发方式不作限制。It should be understood that when the SMF determines the address for forwarding the NEF (eg, the second event notification address), the SMF may deliver the second event notification address to the UPF. It should be noted that the fourth information, the first event notification address and the second event notification address may be delivered in the same message, or may be delivered in different messages. This embodiment of the present application does not limit the manner in which the relevant information is distributed.

S507、UPF接收第四信息，以及第一事件通知地址。S507. The UPF receives the fourth information and the first event notification address.

其中，该UPF可以为SMF为终端设备选择的第一用户面网元。第一信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。第一事件通知地址为接收第一事件的事件通知信息的目的地址，目的地址为应用对应应用功能AF的地址。The UPF may be the first user plane network element selected by the SMF for the terminal device. The first information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application. The first event notification address is a destination address for receiving event notification information of the first event, and the destination address is an address of the application corresponding to the application function AF.

结合S506，UPF还可接收第二事件通知地址，该第二事件通知地址可以为与第一用户面网元对应的本地能力开放网元的地址。该第一用户面网元可以通过该第二事件通知地址，实现将事件报告向第一事件通知地址的上报。In combination with S506, the UPF may also receive a second event notification address, where the second event notification address may be an address of a local capability opening network element corresponding to the first user plane network element. The first user plane network element may report the event report to the first event notification address through the second event notification address.

需要说明的是，本示例中，第二事件通知地址可以为用于转发事件报告的NEF的地址。当然，该第二事件通知地址也可以是其他能够实现事件报告向具有第一事件通知地址的网元的转发功能的网元的地址。本申请实施例对此不作限制。It should be noted that, in this example, the second event notification address may be the address of the NEF for forwarding the event report. Of course, the second event notification address may also be the address of other network elements capable of implementing the forwarding function of the event report to the network element having the first event notification address. This embodiment of the present application does not limit this.

示例性的，以转发事件报告的NEF的地址为第二事件通知地址为例。UPF可以接收具有转发功能的NEF的地址(如第二事件通知地址)。以便在获取事件报告后，可以将事件报告以及对应的目的地址(如第一事件通知地址)一起发送给第二事件通知地址对应的的NEF，进而使得该NEF可以将该事件报告发送给第一事件通知地址对应的的网元。Exemplarily, take the address of the NEF forwarding the event report as the second event notification address as an example. The UPF may receive the address of the NEF with the forwarding function (eg, the second event notification address). So that after obtaining the event report, the event report and the corresponding destination address (such as the first event notification address) can be sent to the NEF corresponding to the second event notification address, so that the NEF can send the event report to the first event notification address. The NE corresponding to the event notification address.

S508、UPF发送第五信息。S508. The UPF sends fifth information.

其中，该第五信息可以包括第一事件的事件通知信息。例如，当第一事件包括服务质量QoS监控请求信息时，则第五信息即可包括QoS监控请求对应的事件报告。当第一事件包括QoS通知控制请求信息时，则第五信息即可包括QoS通知控制请求对应的事件报告。当第一事件包括位置请求信息时，则第五信息即可包括位置请求信息对应的事件报告。The fifth information may include event notification information of the first event. For example, when the first event includes quality of service QoS monitoring request information, the fifth information may include an event report corresponding to the QoS monitoring request. When the first event includes QoS notification control request information, the fifth information may include an event report corresponding to the QoS notification control request. When the first event includes location request information, the fifth information may include an event report corresponding to the location request information.

应当理解的是，当UPF还接收到第二事件通知地址时，则可以向该第二事件通知地址发送第五信息。UPF还可将第一事件通知地址发送给第二事件通知地址对应的网元(如NEF)，以便NEF能够将该第五信息包括的事件报告发送给第一事件通知地址。It should be understood that, when the UPF also receives the second event notification address, the fifth information may be sent to the second event notification address. The UPF may also send the first event notification address to a network element (eg, NEF) corresponding to the second event notification address, so that the NEF can send the event report included in the fifth information to the first event notification address.

当然，如果UPF没有接收到第二事件通知地址，则UPF可以直接将该第五信息发送给第一事件通知地址对应的网元(如AF或NEF)。Certainly, if the UPF does not receive the second event notification address, the UPF may directly send the fifth information to the network element (eg, AF or NEF) corresponding to the first event notification address.

另外，在一些实施例中，该第五信息中还可以包括通知关联标识，以便接收事件报告的网元能够根据该通知关联标识，明确第一事件的事件通知信息与事件通知地址之间的关联。In addition, in some embodiments, the fifth information may further include a notification association identifier, so that the network element receiving the event report can specify the association between the event notification information of the first event and the event notification address according to the notification association identifier .

基于上述关于如图5B所示的方法的说明，SMF可以根据当前PSA对应DNAI，以及地址对应信息，确定事件订阅信息的事件报告的事件通知地址。因此，当出现PSA重选时，由于SMF知晓所有DNAI与事件通知地址的对应关系，因此不需要AF重新下发事件订阅信息，SMF即可确定新的PSA对应的事件通知地址，下发给UPF以便UPF进行准确的上报。由此能够显著地降低事件报告上报的延时，同时能够节省核心网元之间的信令交互。Based on the above description about the method shown in FIG. 5B , the SMF can determine the event notification address of the event report of the event subscription information according to the DNAI corresponding to the current PSA and the address corresponding information. Therefore, when PSA reselection occurs, since SMF knows the correspondence between all DNAIs and event notification addresses, there is no need for AF to re-issue event subscription information. SMF can determine the event notification address corresponding to the new PSA and deliver it to UPF. So that UPF can report accurately. Thereby, the delay of event report reporting can be significantly reduced, and at the same time, signaling interaction between core network elements can be saved.

为了使得本领域技术人员能够更加准确地理解图5B所示的方法，以下结合实例进行进一步说明。其中，图6示出了AF进行地址对应信息下发的具体实施方式。图7为在图6的基础上实现PSA选取的方法示例。图8为事件订阅信息的下发以及对应事件报告的上报示例。图9示出了一种PSA重选场景下的事件上报示例。图11示出了一种订阅事件为非业务相关事件场景下的事件订阅信息下发以及上报的示例。上述图6，图7，图8，图9，以及图11所示的方法均可适用于如图2所示的逻辑架构下，当然也可适用于如图3或图4或图5A所示的部署中。In order to enable those skilled in the art to more accurately understand the method shown in FIG. 5B , further description will be given below with reference to an example. Among them, FIG. 6 shows a specific implementation manner in which the AF performs address correspondence information delivery. FIG. 7 is an example of a method for realizing PSA selection on the basis of FIG. 6 . FIG. 8 is an example of the issue of event subscription information and the reporting of the corresponding event report. FIG. 9 shows an example of event reporting in a PSA reselection scenario. FIG. 11 shows an example of sending and reporting event subscription information in a scenario where the subscription event is a non-service-related event. The above methods shown in FIG. 6 , FIG. 7 , FIG. 8 , FIG. 9 , and FIG. 11 can be applied to the logical architecture shown in FIG. 2 , and of course can also be applied to those shown in FIG. 3 or FIG. 4 or FIG. 5A in deployment.

需要说明的是，以下示例中，以终端设备为UE，应用服务器通过同一个AF下发数据网络接入标识和与其对应的事件通知地址(如称为地址对应信息)，事件订阅信息以及接收事件报告，该方法应用于如图4所示的网络架构中为例。It should be noted that, in the following example, the terminal device is used as the UE, and the application server sends the data network access identifier and the corresponding event notification address (such as address correspondence information), event subscription information and receiving events through the same AF. Report, the method is applied to the network architecture shown in Figure 4 as an example.

示例性的，AF可以根据如图6所示的方法，实现地址对应信息的配置。Exemplarily, the AF may implement the configuration of the address correspondence information according to the method shown in FIG. 6 .

如图6所示，该方法可以包括S601-S603。As shown in FIG. 6, the method may include S601-S603.

S601、AF向NEF发送信息6-1。S601. The AF sends information 6-1 to the NEF.

其中，该信息6-1可以包括地址对应信息。在该地址对应信息中，可以包括至少一个数据网络接入标识和与该至少一个数据网络接入标识对应的事件通知地址。示例性的，在一些实施例中，一个数据网络接入标识可以对应到一个事件通知地址。在另一些实施例中，一个数据网络接入标识也可以对应到多个事件通知地址。以下以一个数据网络接入标识可以对应到一个事件通知地址为例进行说明。The information 6-1 may include address correspondence information. The address correspondence information may include at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier. Exemplarily, in some embodiments, a data network access identifier may correspond to an event notification address. In other embodiments, one data network access identifier may also correspond to multiple event notification addresses. The following description is given by taking as an example that one data network access identifier may correspond to one event notification address.

作为一种可能的实现方式，该信息6-1可以通过Nnef_TrafficInfluence_Create Request消息发送。该数据网络接入标识可以为DNAI。该事件通知地址可以为与该DNAI对应的事件报告的接收地址。需要说明的是，该事件通知地址可以为应用的应用服务器对应的NEF地址，也可以为应用的应用服务器对应的AF地址。As a possible implementation manner, the information 6-1 can be sent through the Nnef_TrafficInfluence_Create Request message. The data network access identifier may be DNAI. The event notification address may be the receiving address of the event report corresponding to the DNAI. It should be noted that the event notification address may be the NEF address corresponding to the application server of the application, or the AF address corresponding to the application server of the application.

应当理解的是，DNAI表示应用的位置信息，即应用的应用服务器的位置信息。一个应用可以在不同的本地DC下分别设置有多个不同的应用服务器。若应用服务器要与PCF交互,那么应用服务器需要跟部署在本地DC中的AF交互，再由AF跟PCF交互。因此一个应用服务器一般可以对应与一个AF地址，从而DNAI也可以对应一个AF。若本地DC中部署有本地NEF，那么DNAI也可以对应一个NEF。在示例中的地址对应信息中，可以包括不同本地DC中，各个AF对应的DNAI与该AF接收事件通知地址的对应关系。以便其他网元(如SMF)可以根据选取的本地UPF对应的DNAI，确定能够接收事件报告的AF或NEF的地址。It should be understood that the DNAI represents the location information of the application, that is, the location information of the application server of the application. An application can have multiple different application servers under different local DCs. If the application server wants to interact with the PCF, the application server needs to interact with the AF deployed in the local DC, and then the AF interacts with the PCF. Therefore, an application server can generally correspond to an AF address, and thus DNAI can also correspond to an AF. If a local NEF is deployed in the local DC, DNAI can also correspond to an NEF. The address correspondence information in the example may include the correspondence between the DNAI corresponding to each AF in different local DCs and the AF receiving event notification address. So that other network elements (such as SMF) can determine the address of the AF or NEF that can receive the event report according to the DNAI corresponding to the selected local UPF.

在一些实现方式中，该信息6-1还可以包括Traffic Steering Info，该Traffic Steering Info可以包括应用服务提供商(application service provider,ASP)标识、业务描述信息，以及对应UE的标识。应当理解的是，不同应用可以在不同本地DC中设置多个应用服务器。对应的，本地DC中可能设置有多个应用服务器，用于支持不同应用的相应服务。因此，在本示例中，该信息6-1还可包括能够标识应用的ASP标识，业务描述信息以及目标UE的标识信息(譬如UE的IP地址、任意UE的指示信息、UE的外部标识或外部组标识)。In some implementations, the information 6-1 may also include Traffic Steering Info, which may include an application service provider (application service provider, ASP) identifier, service description information, and an identifier of the corresponding UE. It should be understood that different applications may set up multiple application servers in different local DCs. Correspondingly, multiple application servers may be set in the local DC to support corresponding services of different applications. Therefore, in this example, the information 6-1 may also include an ASP identifier capable of identifying an application, service description information, and identification information of the target UE (such as the IP address of the UE, the indication information of any UE, the external identifier of the UE or the external identifier of the target UE). group ID).

S602、NEF向PCF发送信息6-2。S602. The NEF sends information 6-2 to the PCF.

NEF在获取来自AF的信息6-1后，可以对其进行处理，如进行转码处理，以便对该信息6-1进行掩藏，达到保护AF的目的。例如NEF可以通过将Nnef_TrafficInfluence_Create Request中的外部组标识映射为内部组标识、UE的外部标识映射为内部标识实现上述目的。接着该NEF可以将根据信息6-1获取的信息6-2发送给PCF。NEF可以直接将信息6-2发送给PCF或NEF通过提供数据存储服务的统一数据存储库(Unified Data Repository，UDR)将信息6-2发送给PCF。After acquiring the information 6-1 from the AF, the NEF may process it, such as transcoding, so as to hide the information 6-1 and achieve the purpose of protecting the AF. For example, the NEF can achieve the above purpose by mapping the external group identifier in the Nnef_TrafficInfluence_Create Request to the internal group identifier and the UE's external identifier to the internal identifier. Next, the NEF may send the information 6-2 obtained according to the information 6-1 to the PCF. The NEF can directly send the information 6-2 to the PCF or the NEF can send the information 6-2 to the PCF through a unified data repository (Unified Data Repository, UDR) that provides data storage services.

作为一种示例，若目标UE的标识信息为UE的IP地址，则NEF通过Npcf_PolicyAuthorization Request发送给PCF。该信息6-2包括用于指示地址对应信息的相关信息以及ASP标识，业务描述信息。起作用与S601中的相关信息类似，此处不再赘述。As an example, if the identification information of the target UE is the IP address of the UE, the NEF sends it to the PCF through the Npcf_PolicyAuthorization Request. The information 6-2 includes relevant information for indicating address correspondence information, ASP identifiers, and service description information. The function is similar to the relevant information in S601, and will not be repeated here.

作为一种示例，若目标UE的标识信息为任意UE的指示信息、UE的外部标识或外部组标识，则NEF可以通过Nudr_DM_Update Request将信息6-2发送给UDR。UDR可以在接收到该Nudr_DM_Update Request后，对其进行存储。对于需要获取该信息的PCF，一般会向UDR订阅对应的Traffic Steering Info，UDR可以向订阅了对应Traffic Steering Info的PCF，发送该Nudr_DM_Update Request。由此实现信息6-2向PCF的传输。As an example, if the identity information of the target UE is the indication information of any UE, the external identity of the UE or the external group identity, the NEF can send the information 6-2 to the UDR through Nudr_DM_Update Request. The UDR can store the Nudr_DM_Update Request after receiving it. For the PCF that needs to obtain this information, it generally subscribes the corresponding Traffic Steering Info to the UDR, and the UDR can send the Nudr_DM_Update Request to the PCF that has subscribed to the corresponding Traffic Steering Info. The transmission of the information 6-2 to the PCF is thereby achieved.

需要说明的是，在本申请实施例中，当AF与PCF之间设置有NEF时，信息6-2可以对应于如图5B所示方案中的第一信息。而当AF与PCF之间没有设置NEF时，则上述信息6-1可以对应到如图5B所示方案中的第一信息。It should be noted that, in the embodiment of the present application, when the NEF is set between the AF and the PCF, the information 6-2 may correspond to the first information in the solution shown in FIG. 5B . However, when the NEF is not set between the AF and the PCF, the above-mentioned information 6-1 may correspond to the first information in the scheme shown in FIG. 5B .

S603、PCF根据该信息6-2，生成第一PCC规则。S603. The PCF generates a first PCC rule according to the information 6-2.

PCF在接收到该信息6-2后，可以根据该信息6-2，生成对应的PCC规则，以便其他网元可以根据该PCC规则执行对应的操作。After receiving the information 6-2, the PCF can generate a corresponding PCC rule according to the information 6-2, so that other network elements can perform corresponding operations according to the PCC rule.

示例性的，PCF在接收到Nudr_DM_Update Request后，可以定制对应的PCC规则(如称为PCC规则1)。在该PCC规则1中，可以只包括DNAI或者包括DNAI与事件通知地址之间的对应关系。例如，以Nudr_DM_Update Request中包括应用1对应的多个DNAI与事件通知地址的对应关系。在PCC规则1中，就可以包括该应用1对应的多个DNAI或者多个DNAI与事件通知地址的对应关系。Exemplarily, after receiving the Nudr_DM_Update Request, the PCF can customize the corresponding PCC rule (for example, referred to as PCC rule 1). In this PCC rule 1, only the DNAI or the corresponding relationship between the DNAI and the event notification address may be included. For example, the Nudr_DM_Update Request includes the correspondence between multiple DNAIs corresponding to application 1 and the event notification address. In PCC rule 1, it may include multiple DNAIs corresponding to the application 1 or the corresponding relationship between multiple DNAIs and event notification addresses.

应当理解的是，在本示例中，上述第一PCC规则中包括的地址对应信息可以与如图5B所示方案中的第一信息中的地址对应信息相同。It should be understood that, in this example, the address correspondence information included in the first PCC rule may be the same as the address correspondence information in the first information in the solution shown in FIG. 5B .

由此，就实现了应用对应的地址对应信息在PCC规则中的体现。Thus, the address correspondence information corresponding to the application is embodied in the PCC rule.

应当理解的是，UE建立PDU会话或UE建立PDU会话时，SMF可以根据PCC规则，为该UE选取对应的UPF作为PSA。It should be understood that when the UE establishes a PDU session or when the UE establishes a PDU session, the SMF may select a corresponding UPF as the PSA for the UE according to the PCC rule.

示例性的，请参考图7，PCF可以将该第一PCC规则发送给SMF(即执行S701)。在UE建立PDU会话时或UE建立PDU会话后，SMF可以根据第一PCC规则(即DNAI)，为UE选取UPF作为PSA(即执行S702)。作为一种可能的实现方式，当UE建立用于访问应用1的PDU会话时，SMF可以根据第一PCC规则确定与该应用1对应的应用服务器。由于在不同本地DC中，应用服务器与UPF存在对应关系，因此SMF可以据此获取能够访问应用1的UPF列表。SMF可以根据预设的规则，为UE选取对应的UPF作为PSA。例如，SMF可以根据UE当前的位置，选取与该UE距离最近的，在上述UPF列表中的UPF作为PSA与该UE建立PDU会话。当然，SMF也可根据其他规则为UE选取PSA，此处不再赘述。应当理解的是，如图7所示方案中，SMF根据第一PCC规则为UE确定的PSA可以对应到如图5B所示方案中的第一用户面网元。Exemplarily, referring to FIG. 7 , the PCF may send the first PCC rule to the SMF (ie, perform S701). When the UE establishes the PDU session or after the UE establishes the PDU session, the SMF may select the UPF as the PSA for the UE according to the first PCC rule (ie, DNAI) (ie, perform S702). As a possible implementation manner, when the UE establishes a PDU session for accessing the application 1, the SMF may determine the application server corresponding to the application 1 according to the first PCC rule. Since there is a corresponding relationship between the application server and the UPF in different local DCs, the SMF can obtain the list of UPFs that can access the application 1 accordingly. The SMF can select the corresponding UPF as the PSA for the UE according to a preset rule. For example, according to the current position of the UE, the SMF can select the UPF that is closest to the UE, and the UPF in the above-mentioned UPF list is used as the PSA to establish a PDU session with the UE. Of course, the SMF can also select the PSA for the UE according to other rules, which will not be repeated here. It should be understood that, in the solution shown in FIG. 7 , the PSA determined by the SMF for the UE according to the first PCC rule may correspond to the first user plane network element in the solution shown in FIG. 5B .

由此，就实现了UE与PSA的PDU会话。UE可以通过该PDU会话访问DN，例如，UE可以通过该PDU会话访问应用1对应的应用服务器。Thus, the PDU session between the UE and the PSA is realized. The UE can access the DN through the PDU session, for example, the UE can access the application server corresponding to the application 1 through the PDU session.

在UE建立PDU会话后，UE可以通过应用层信令和应用服务器交互，应用服务器可以通过AF向UPF下发事件订阅信息。需要说明的是，该事件订阅信息可以为业务相关的信息，如QoS监控信息。该事件订阅信息也可是与业务不相关的信息，例如，该事件订阅信息可以用于订阅UE的位置信息本申请实施例对此不作限制。以下以事件订阅信息用于定于QoS监控信息为例。After the UE establishes a PDU session, the UE can interact with the application server through application layer signaling, and the application server can deliver event subscription information to the UPF through the AF. It should be noted that the event subscription information may be service-related information, such as QoS monitoring information. The event subscription information may also be information not related to services. For example, the event subscription information may be used to subscribe to the location information of the UE. This embodiment of the present application does not limit this. In the following, the event subscription information is used for the scheduled QoS monitoring information as an example.

如图8所示，示出了本申请实施例提供的一种事件通知方法的流程示意图。可以理解的是，该方法可以应用在UE于UPF建立PDU会话后，对该通信过程进行相关检测的场景下。例如，该方法可以应用于UE建立如图7所示的PDU会话之后。As shown in FIG. 8 , a schematic flowchart of an event notification method provided by an embodiment of the present application is shown. It can be understood that this method can be applied in the scenario where the UE performs relevant detection on the communication process after the UE establishes a PDU session in the UPF. For example, the method can be applied after the UE establishes the PDU session as shown in FIG. 7 .

如图8所示，该方法可以包括S801-S808。该方法可以应用于如图7所示的PDU会话建立后。需要说明的是，在另一些实现方式中，该图8所示的方法也可以与如图7所示的方法同时进行。本申请实施例对于图7所示方法与图8所示方法的执行先后顺序不作限制。以下以在执行图8所示的方法之前建立如图7所示的PDU会话为例。As shown in FIG. 8, the method may include S801-S808. This method can be applied after the PDU session is established as shown in FIG. 7 . It should be noted that, in other implementation manners, the method shown in FIG. 8 may also be performed simultaneously with the method shown in FIG. 7 . This embodiment of the present application does not limit the execution sequence of the method shown in FIG. 7 and the method shown in FIG. 8 . The following takes the establishment of the PDU session shown in FIG. 7 as an example before executing the method shown in FIG. 8 .

S801、AF向NEF发送信息8-1。S801. The AF sends information 8-1 to the NEF.

其中，该信息8-1中可以包括事件订阅信息。The information 8-1 may include event subscription information.

示例性的，以该事件订阅信息可以用于请求业务相关通信数据(如QoS相关数据)为例。该事件订阅信息中可以包括业务数据流的描述信息、ASP标识等。Exemplarily, take the event subscription information being used to request service-related communication data (eg, QoS-related data) as an example. The event subscription information may include description information of the service data flow, an ASP identifier, and the like.

作为一种示例，该事件订阅信息用于进行服务质量监控(QoS Monitoring)时，该事件订阅信息还可以包括QoS Monitoring信息或者QoS Monitoring信息和QoS Monitoring事件标识。其中，该QoS Monitoring信息可以包括但不限于请求QoS Monitoring Parameter(即测量的延迟类型，可以包括上行数据、下行数据或往返数据)、报告频率(周期性、事件触发)等信息。该事件订阅信息用于请求QoS通知控制(QoS Notification Control)事件通知时，该事件订阅信息还可以包括QoS Notification Control的指示(如QoS Notification Control事件标识)等。As an example, when the event subscription information is used for quality of service monitoring (QoS Monitoring), the event subscription information may further include QoS Monitoring information or QoS Monitoring information and a QoS Monitoring event identifier. The QoS Monitoring information may include, but is not limited to, the requested QoS Monitoring Parameter (that is, the measured delay type, which may include uplink data, downlink data, or round-trip data), reporting frequency (periodicity, event trigger) and other information. When the event subscription information is used to request a QoS Notification Control (QoS Notification Control) event notification, the event subscription information may also include an indication of the QoS Notification Control (such as a QoS Notification Control event identifier) and the like.

另外，该信息8-1可以通过Nnef_AFsessionWithQoS_Create request消息发送给NEF，该消息中可以包括通知关联标识。UPF在检测到对应的事件后，可以在对应的事件报告中携带该通知关联标识，以便于接收事件报告的AF或NEF能够知晓该事件报告是与这个事件订阅关联的。In addition, the information 8-1 may be sent to the NEF through the Nnef_AFsessionWithQoS_Create request message, and the message may include the notification association identifier. After detecting the corresponding event, the UPF may carry the notification association identifier in the corresponding event report, so that the AF or NEF receiving the event report can know that the event report is associated with the event subscription.

S802、NEF向PCF发送信息8-2。S802. The NEF sends information 8-2 to the PCF.

类似与上述图6所示的S602，NEF可以对信息8-1执行类似的处理，获取信息8-2并向PCF发送。其处理过程类似，此处不再赘述。当然NEF也可通过UDR传输该信息8-2，本示例对此不作限制。示例性的，NEF发送的信息8-2可以为Npcf_PolicyAuthorization Request。Similar to S602 shown in FIG. 6 above, the NEF can perform similar processing on the information 8-1, acquire the information 8-2 and send it to the PCF. The processing process is similar, and will not be repeated here. Of course, the NEF can also transmit the information 8-2 through the UDR, which is not limited in this example. Exemplarily, the information 8-2 sent by the NEF may be Npcf_PolicyAuthorization Request.

在本申请实施例中，当AF与PCF之间设置有NEF时，信息8-2可以对应于如图5B所示方案中的第二信息。而当AF与PCF之间没有设置NEF时，则上述信息8-1可以对应到如图5B所示方案中的第二信息。In this embodiment of the present application, when the NEF is set between the AF and the PCF, the information 8-2 may correspond to the second information in the scheme shown in FIG. 5B . When the NEF is not set between the AF and the PCF, the above-mentioned information 8-1 may correspond to the second information in the scheme shown in FIG. 5B .

S803、PCF根据该信息8-2，以及第一PCC规则，获取第二PCC规则。S803. The PCF acquires the second PCC rule according to the information 8-2 and the first PCC rule.

可以理解的是，根据如图6和图7的说明，PCF中存储有第一PCC规则。该第一PCC规则中可以包括应用对应的地址对应信息。It can be understood that, according to the description of FIG. 6 and FIG. 7 , the PCF stores the first PCC rule. The first PCC rule may include address correspondence information corresponding to the application.

PCF在接收到该信息8-2后，可以对第一PCC规则进行更新，以获取更新后的PCC规则(即第二PCC规则)。在该第二PCC规则中，可以包括事件订阅信息，以及与该事件订阅信息对应应用的地址对应信息。本示例中的第二PCC规则，可以包括对应于如图5B所示方案中的第三信息的事件订阅信息，以及如图5B所示方案中的第一信息的地址对应信息。After receiving the information 8-2, the PCF can update the first PCC rule to obtain the updated PCC rule (ie, the second PCC rule). The second PCC rule may include event subscription information and address correspondence information of an application corresponding to the event subscription information. The second PCC rule in this example may include event subscription information corresponding to the third information in the scheme shown in FIG. 5B , and address correspondence information of the first information in the scheme shown in FIG. 5B .

由于应用对应的地址对应信息与信息8-2可能并非同时接收到，因此，PCF可以根据信息8-2中的ASP标识将上述的应用的地址对应信息与信息8-2进行关联。Since the address correspondence information corresponding to the application and the information 8-2 may not be received at the same time, the PCF can associate the above-mentioned application address correspondence information with the information 8-2 according to the ASP identifier in the information 8-2.

在一些实现方式中，PCF在接收到信息8-2后，可以根据该信息8-2中包括的事件订阅信息对应的ASP标识，确定第一PCC规则中对应应用的地址对应信息。例如，事件订阅信息对应的ASP标识指示该事件订阅信息对应于应用1，则PCF可以根据该ASP标识，将该应用1对应的地址对应信息6-1携带在第二PCC规则中。又另外，该第二PCC规则中还可包括其他信息，例如，该第二PCC规则中可以包括信息8-2中的通知关联标识。In some implementations, after receiving the information 8-2, the PCF may determine the address correspondence information of the corresponding application in the first PCC rule according to the ASP identifier corresponding to the event subscription information included in the information 8-2. For example, if the ASP identifier corresponding to the event subscription information indicates that the event subscription information corresponds to application 1, the PCF can carry the address correspondence information 6-1 corresponding to application 1 in the second PCC rule according to the ASP identifier. In addition, the second PCC rule may further include other information, for example, the second PCC rule may include the notification association identifier in the information 8-2.

S804、PCF向SMF发送第二PCC规则。S804. The PCF sends the second PCC rule to the SMF.

S805、SMF根据第二PCC规则确定事件通知地址1。S805. The SMF determines the event notification address 1 according to the second PCC rule.

由于SMF根据第一PCC规则为UE选择了PSA，当SMF接收到第二PCC规则(即事件订阅信息时)，SMF进一步根据用于选择该PSA的DNAI和应用的地址对应信息确定事件通知地址1。在本示例中，该事件通知地址1可以对应到如图5B所示方案中的第一事件通知地址。Since the SMF selects the PSA for the UE according to the first PCC rule, when the SMF receives the second PCC rule (that is, the event subscription information), the SMF further determines the event notification address 1 according to the DNAI used to select the PSA and the address correspondence information of the application . In this example, the event notification address 1 may correspond to the first event notification address in the solution shown in FIG. 5B .

S806、SMF向UPF发送信息8-3。S806, the SMF sends information 8-3 to the UPF.

SMF可以将包括事件订阅信息(如图5B所示方案中的第四信息)，事件通知地址1，以及通知关联标识的信息8-3发送给与该事件对应的UPF。The SMF may send information 8-3 including event subscription information (the fourth information in the scheme shown in FIG. 5B ), the event notification address 1, and the notification association identifier to the UPF corresponding to the event.

S807、UPF获取事件报告。S807, the UPF obtains an event report.

UPF可以根据获取的事件订阅信息，执行对应的监控。示例性的，由于该UPF一般为与UE建立PDU会话的PSA，因此UPF获取事件报告也可称为PSA获取事件报告。当事件订阅信息为QoS Monitoring时，PSA可以测量UE和PSA之间的包传输延迟，当满足报告频率指示的条件时即为检测到QoS Monitoring对应的事件。当事件订阅信息为QoS Notification Control时，当PSA接收到RAN发送的带宽不能保证或带宽能够再次保证的通知时，即为检测到QoS Notification Control事件。UPF can perform corresponding monitoring according to the acquired event subscription information. Exemplarily, since the UPF is generally a PSA that establishes a PDU session with the UE, the UPF acquisition event report may also be referred to as a PSA acquisition event report. When the event subscription information is QoS Monitoring, the PSA can measure the packet transmission delay between the UE and the PSA. When the conditions indicated by the reporting frequency are met, the event corresponding to QoS Monitoring is detected. When the event subscription information is QoS Notification Control, when the PSA receives a notification from the RAN that the bandwidth cannot be guaranteed or that the bandwidth can be guaranteed again, it detects the QoS Notification Control event.

S808、UPF向AF发送信息8-4。S808, the UPF sends information 8-4 to the AF.

UPF在获取与事件订阅信息对应的事件报告后，即可执行事件报告的反馈。示例性的，UPF可以将该事件报告反馈给具有事件通知地址1的网元。在不同的实现场景下，该网元可以为AF或NEF。本示例中是以事件通知地址1对应的网元为AF为例进行说明的。After the UPF obtains the event report corresponding to the event subscription information, it can execute the feedback of the event report. Exemplarily, the UPF may feed back the event report to the network element with the event notification address 1 . In different implementation scenarios, the network element may be AF or NEF. In this example, the network element corresponding to the event notification address 1 is AF as an example for description.

结合如图4所示的通信架构，UPF可以通过N4a接口与本地DC中的NEF进行数据传输。进一步的NEF可以将对应的数据传输给本地DC中的AF。在该示例中，事件通知地址1可以为本地NEF的地址。UPF可以将包括事件报告，通知关联标识的信息8-4发送给NEF。这样UPF就完成了事件报告向事件通知地址1的上报。在该示例中，该信息8-4可以对应到如图5B所示方案中的第五信息。Combined with the communication architecture shown in Figure 4, the UPF can transmit data with the NEF in the local DC through the N4a interface. Further NEFs can transmit corresponding data to AFs in the local DC. In this example, the event notification address 1 may be the address of the local NEF. The UPF may send the information 8-4 including the event report, notification association identification to the NEF. In this way, the UPF completes the reporting of the event report to the event notification address 1. In this example, the information 8-4 may correspond to the fifth information in the scheme shown in FIG. 5B.

需要说明的是，在另一些实现方式中，该事件通知地址可能为本地DC中的AF对应的地址，或者位于其他本地DC中的AF对应的地址，或者位于中央DC中的AF对应的地址。在该示例中，SMF发送给UPF的信息8-3中，除了该事件通知地址1外，还可包括与该事件通知地址对应的NEF的地址(如事件通知地址2)。这样，UPF可以将事件报告，以及事件通知地址1上报给事件通知地址2对应的网元。NEF在接收到该事件通知地址后，可以进一步将该事件报告传输给具有事件通知地址1的网元(如AF)。由此实现了事件报告向具有事件通知地址1的网元的反馈。在该示例中，该事件通知地址2可以对应到如图5B所示方案中的第二事件通知地址。It should be noted that, in other implementation manners, the event notification address may be an address corresponding to an AF in the local DC, an address corresponding to an AF located in other local DCs, or an address corresponding to an AF located in the central DC. In this example, the information 8-3 sent by the SMF to the UPF may include, in addition to the event notification address 1, the address of the NEF (eg, the event notification address 2) corresponding to the event notification address. In this way, the UPF can report the event report and the event notification address 1 to the network element corresponding to the event notification address 2 . After receiving the event notification address, the NEF may further transmit the event report to the network element (eg AF) having the event notification address 1. Thereby, the feedback of the event report to the network element with the event notification address 1 is realized. In this example, the event notification address 2 may correspond to the second event notification address in the scheme shown in Fig. 5B.

可以理解的是，基于上述图6，图7，图8的关于事件上报方法的说明，由于SMF可以获取所有可能的DNAI与事件通知地址的对应关系，因此当由于UE移动等原因出现PSA重选后，SMF根据保存的事件订阅信息，确定新的PSA对应的事件通知地址，并将新的事件通知地址与事件订阅信息一同下发给UPF。这样就能够避免在出现PSA重选后，AF必须重新下发事件订阅信息才能确保UPF将事件报告传输给正确的地址的问题。It can be understood that, based on the description of the event reporting method in the above Figures 6, 7, and 8, since the SMF can obtain all possible correspondences between the DNAI and the event notification address, when the PSA reselection occurs due to UE movement and other reasons Afterwards, the SMF determines the event notification address corresponding to the new PSA according to the saved event subscription information, and delivers the new event notification address together with the event subscription information to the UPF. This can avoid the problem that after PSA reselection occurs, the AF must re-issue the event subscription information to ensure that the UPF transmits the event report to the correct address.

作为一种示例，图9给出了一种PSA重选后的事件上报方法的流程示意图。其中以UE对用导致PSA重选为例。如图9所示，该方法可包括S901-S905。As an example, FIG. 9 shows a schematic flowchart of a method for reporting events after PSA reselection. The UE pair usage leads to PSA reselection as an example. As shown in FIG. 9, the method may include S901-S905.

S901、SMF为移动的UE重新分配PSA。S901, the SMF reallocates the PSA for the moving UE.

应当理解的是，当UE移动时，为了能够为UE提供更好的通信服务，SMF可以随着UE的移动为其调整PSA以便接入DN。在本身中，该重新分配的PSA可以称为第二用户面网元，即第二UPF。It should be understood that, in order to be able to provide better communication services for the UE when the UE moves, the SMF can adjust the PSA for the UE to access the DN as the UE moves. In itself, this reallocated PSA may be referred to as the second user plane network element, ie the second UPF.

示例性的，请参考图10。当UE从位置1移动到位置2时，SMF也可将与UE进行PDU会话的PSA由本地DC1中的UPF1切换为本地DC2中的UPF2。显而易见的，当UPF1和UPF能够提供的服务质量相同的情况下，在UE处于位置2时，UPF2能够为UE提供更好的通信服务。For example, please refer to FIG. 10 . When the UE moves from location 1 to location 2, the SMF may also switch the PSA for the PDU session with the UE from UPF1 in local DC1 to UPF2 in local DC2. Obviously, when the quality of service that can be provided by UPF1 and UPF is the same, when the UE is in position 2, UPF2 can provide a better communication service for the UE.

而当UE移动后，由于与其建立PDU会话的UPF已经发生了变化，当应用服务器想要获取UE当前的订阅事件信息对应的事件报告时，无法通过本地DC1中的AF(UE移动前应用服务器获取事件报告的AF)获取本地DC2中的UPF2监控获取的事件报告。本申请实施例中，由于SMF能够知晓应用对应的所有DNAI与事件通知地址之间的对应关系(如上述地址对应信息)，因此当PSA更新后，SMF也能够确定对应的更新的事件通知地址。After the UE moves, because the UPF with which the PDU session is established has changed, when the application server wants to obtain the event report corresponding to the current subscription event information of the UE, it cannot obtain the AF in the local DC1 (the application server obtains the UE before moving). AF for Event Reports) obtains event reports obtained by UPF2 monitoring in local DC2. In the embodiment of the present application, since the SMF can know the correspondence between all DNAIs corresponding to the application and the event notification addresses (such as the above address correspondence information), after the PSA is updated, the SMF can also determine the corresponding updated event notification address.

在本实施例中，DC1中的应用服务器也会将事件订阅信息通过应用层发送给DC2中的应用服务器(譬如通知关联标识)，此后DC2可以与对应的AF交互，通知AF将对应的事件通知发送给应用服务器。In this embodiment, the application server in DC1 will also send the event subscription information to the application server in DC2 through the application layer (such as a notification association identifier), after which DC2 can interact with the corresponding AF, and notify the AF to notify the corresponding event sent to the application server.

S902、SMF根据第二PCC规则确定事件通知地址3。S902, the SMF determines the event notification address 3 according to the second PCC rule.

在SMF为UE分配了新的PSA后，可以根据第二PCC规则确定与该新的PSA(如图10所示的UPF2)对应的DNAI所对应的事件通知地址3。该确定方法与图8中所示的S805类似，此处不再赘述。After the SMF allocates a new PSA to the UE, the event notification address 3 corresponding to the DNAI corresponding to the new PSA (UPF2 shown in FIG. 10 ) may be determined according to the second PCC rule. The determination method is similar to S805 shown in FIG. 8 and will not be repeated here.

S903、SMF向UPF发送信息9-1。S903. The SMF sends information 9-1 to the UPF.

S904、UPF获取事件报告。S904, the UPF obtains an event report.

S905、UPF向AF发送信息9-2。S905, the UPF sends information 9-2 to the AF.

在获取新的事件通知地址后，SMF就可继续执行S903-S905。其各自的执行方式均能够对应到如图8所示的S806-S808。此处不再赘述。其中，该信息9-1可以包括如图5B所示方案中的第四信息以及第一事件通知地址。信息9-2可以包括如图5B所示方案中的第五信息。After acquiring the new event notification address, the SMF can continue to execute S903-S905. Their respective execution modes can correspond to S806-S808 shown in FIG. 8 . It will not be repeated here. Wherein, the information 9-1 may include the fourth information and the first event notification address in the scheme shown in FIG. 5B . The information 9-2 may include the fifth information in the scheme shown in FIG. 5B.

需要说明的是，在SMF为UE重新选择了PSA后，可以选择一个网络中的一个UPF作为分叉点(branching point)或者上行数据分流器(uplink classifier)，通过向该中间UPF配置分流规则，使得UE访问应用时发出的上行数据能够通过该UPF转发给重选后的PSA。由此实现重选PSA后UE的顺利上行通信。It should be noted that after the SMF reselects the PSA for the UE, a UPF in a network can be selected as a branching point or an uplink classifier. This enables the uplink data sent by the UE to access the application to be forwarded to the reselected PSA through the UPF. In this way, smooth uplink communication of the UE after reselection of the PSA is realized.

结合上述说明，AF可以通过如图6所示的方法将不同地址对应信息配置到PCF中。AF还可以通过如图8所示的方法下发事件订阅信息。以便SMF可以基于与PCF的交互，确定与选取的PSA对应的事件通知地址，并指示UPF通过该事件通知地址上报与事件订阅信息对应的事件报告。作为一种示例，当AF(或与AF对应的应用服务器)想要获取的事件报告为与业务相关的事件报告(如QoS监控相关的事件报告)时，应用服务器可以控制相同或不同的AF，通过同一个信令将事件订阅信息以及包括不同地址对应信息的信息下发给其他网元。在另一种实现方式中，应用服务器还可以控制相同或不同的AF，通过不同的信令将事件订阅信息以及包括不同地址对应信息的信息下发给其他网元。在另一些实施例中，当AF(或与AF对应的应用服务器)想要获取的事件报告为与业务无关的事件报告(如UE位置的事件报告)时，应用服务器可以控制相同或不同的AF，通过同一个信令将事件订阅信息以及包括不同地址对应信息的信息下发给其他网元。为了使本领域技术人员能够更急清楚地了解本申请实施例所提供的方法在应用服务器获取与业务无关的事件报告的场景下的应用方法，以下对该场景下的具体实施方法进行示例性说明。In combination with the above description, the AF can configure the information corresponding to different addresses into the PCF by the method shown in FIG. 6 . The AF can also deliver event subscription information through the method shown in FIG. 8 . So that the SMF can determine the event notification address corresponding to the selected PSA based on the interaction with the PCF, and instruct the UPF to report the event report corresponding to the event subscription information through the event notification address. As an example, when the event report that the AF (or the application server corresponding to the AF) wants to obtain is a service-related event report (such as an event report related to QoS monitoring), the application server may control the same or different AFs, The event subscription information and information including information corresponding to different addresses are delivered to other network elements through the same signaling. In another implementation manner, the application server may also control the same or different AFs, and deliver event subscription information and information including information corresponding to different addresses to other network elements through different signaling. In other embodiments, when the event report that the AF (or the application server corresponding to the AF) wants to obtain is an event report unrelated to services (such as the event report of the UE location), the application server may control the same or different AFs , the event subscription information and information including information corresponding to different addresses are delivered to other network elements through the same signaling. In order to enable those skilled in the art to more urgently and clearly understand the application method of the method provided by the embodiments of the present application in the scenario where the application server obtains the event report irrelevant to the business, the specific implementation method in the scenario is exemplified below. .

请参考图11，为本申请实施例提供的又一种事件上报方法的流程示意图。其中，以下发事件订阅信息以及地址信息的AF，与接收事件报告的AF为相同AF为例。Please refer to FIG. 11 , which is a schematic flowchart of another event reporting method provided by an embodiment of the present application. The AF that sends the event subscription information and the address information is the same as the AF that receives the event report, for example.

如图11所示，该方法可以包括S1101-S1107。As shown in FIG. 11, the method may include S1101-S1107.

S1101、AF向PCF发送信息11-1。S1101. The AF sends information 11-1 to the PCF.

在本示例中，该信息11-1可以通过Nnef_TrafficInfluence_Create Request发送。其中，该信息11-1中至少可以包括DNAI和事件通知地址的对应关系(即地址对应信息)、与事件订阅信息对应的事件标识和可选的AF为事件订阅信息分配的标识(如Notification Correlation Id)。其中，该信息11-1可以包括如图5B所示方案中的第一信息和第二信息。In this example, this information 11-1 can be sent via Nnef_TrafficInfluence_Create Request. Wherein, the information 11-1 may include at least the corresponding relationship between the DNAI and the event notification address (that is, the address correspondence information), the event identifier corresponding to the event subscription information, and the optional identifier allocated by the AF for the event subscription information (such as Notification Correlation Id). Wherein, the information 11-1 may include the first information and the second information in the scheme shown in FIG. 5B .

结合上述S601-S602中的说明，在不同的网络架构下，AF可以通过NEF将该信息11-1发送给PCF，AF也可通过NEF和UDR将该信息11-1发送给PCF，AF还可以直接将该信息11-1发送给PCF。其具体实现方式与S601-S602中的方法类似，此处不再赘述。Combined with the descriptions in S601-S602 above, under different network architectures, the AF can send the information 11-1 to the PCF through the NEF, the AF can also send the information 11-1 to the PCF through the NEF and UDR, and the AF can also This information 11-1 is sent directly to the PCF. The specific implementation manner is similar to the method in S601-S602, which will not be repeated here.

S1102、PCF根据信息11-1定制对应的PCC规则。S1102. The PCF customizes the corresponding PCC rule according to the information 11-1.

PCF根据接收到新11-1，可以定制对应的PCC规则。示例性的，该PCC规则中可以携带Traffic Steering Policy，该Traffic Steering Policy中可以包括DNAI的列表，用于SMF根据Traffic Steering Policy选择PSA。若信息11-1指示的目标UE的标识信息为任意UE的指示信息或内部组标识，则PCC规则中还包括发送UE标识的指示。The PCF can customize the corresponding PCC rules according to the new 11-1 received. Exemplarily, the PCC rule may carry the Traffic Steering Policy, and the Traffic Steering Policy may include a list of DNAIs for the SMF to select the PSA according to the Traffic Steering Policy. If the identity information of the target UE indicated by the information 11-1 is the indication information of any UE or the internal group identity, the PCC rule also includes an indication of sending the UE identity.

在本示例中，该Traffic Steering Policy中还可以包括地址对应信息，事件标识，以及Notification Correlation Id。应当理解的是，在本示例中，该PCC规则可以包括如图5B所示方案中的第三信息和第四信息。In this example, the Traffic Steering Policy may also include address correspondence information, an event identifier, and a Notification Correlation Id. It should be understood that, in this example, the PCC rule may include the third information and the fourth information in the scheme shown in FIG. 5B .

S1103、PCF向SMF发送PCC规则。S1103. The PCF sends the PCC rule to the SMF.

S1104、SMF根据PCC规则确定事件通知地址。S1104. The SMF determines the event notification address according to the PCC rule.

结合上述S804-S806中的说明，SMF可以根据PCC规则中的地址对应信息，即当前选定的PSA(如上述第一用户面网元)，确定事件订阅信息对应的事件通知地址。其中，该事件通知地址即可为如图5B所示方案中的第一事件通知地址。Combined with the descriptions in S804-S806 above, the SMF can determine the event notification address corresponding to the event subscription information according to the address corresponding information in the PCC rule, that is, the currently selected PSA (such as the first user plane network element above). The event notification address may be the first event notification address in the solution shown in FIG. 5B .

S1105、SMF向UPF发送信息11-2。S1105, the SMF sends information 11-2 to the UPF.

该信息11-2中可以包括事件订阅信息以及对应的事件通知地址。若PCC规则中包括发送UE标识的指示，则信息11-2中还包括UE的外部标识。在一些实现方式中，该信息11-2可以包括如图5B所示方案中的第四信息以及第一事件通知地址。The information 11-2 may include event subscription information and a corresponding event notification address. If the PCC rule includes an instruction to send the UE identity, the information 11-2 also includes the external identity of the UE. In some implementations, the information 11-2 may include the fourth information in the scheme shown in FIG. 5B and the first event notification address.

S1106、UPF获取事件报告。S1106, the UPF obtains an event report.

S1107、UPF向AF发送事件报告。S1107. The UPF sends an event report to the AF.

UPF可以通过SMF指示的事件通知地址上报获取的事件报告。作为一种示例，该事件报告可以为如图5B所示方案中的第五信息。The UPF can report the acquired event report through the event notification address indicated by the SMF. As an example, the event report may be the fifth information in the scheme shown in FIG. 5B .

需要说明的是，在AF下发信息11-1时，还可下发通知关联标识，以便UPF在上报事件时，可以将该通知关联标识一同上传，使得应用服务器能够知晓获取的事件报告与下发的事件订阅信息之间的关联。另外，在一些实施例中，事件订阅信息为与某些终端设备对应的，因此，UE在上报事件报告时，可以将AF为其配置的Notification Correlation Id一同上报，以便应用服务器能够将该事件报告与UE关联。若信息11-2中包括UE的外部标识，则事件报告中还报告UE的外部标识。It should be noted that when the AF issues the information 11-1, it can also issue a notification associated identifier, so that when the UPF reports an event, the notification associated identifier can be uploaded together, so that the application server can know the acquired event report and the next one. The association between the sent event subscription information. In addition, in some embodiments, the event subscription information is corresponding to some terminal devices. Therefore, when the UE reports the event report, it can report the Notification Correlation Id configured by the AF for it together, so that the application server can report the event. associated with the UE. If the information 11-2 includes the external identity of the UE, the external identity of the UE is also reported in the event report.

通过如图11所示的方法的说明，应当理解的是，SMF可以根据选定的PSA确定事件订阅信息对应的事件报告的事件通知地址，因此，当由于UE移动等原因出现PSA(UPF)重选时，可以根据如图9所示的方法，执行对应的事件上报机制。由此避免了当PSA发生变化时，AF需要重新下发事件订阅信息导致的延时过大的问题。Through the description of the method shown in FIG. 11 , it should be understood that the SMF can determine the event notification address of the event report corresponding to the event subscription information according to the selected PSA. When selecting, the corresponding event reporting mechanism may be implemented according to the method shown in FIG. 9 . This avoids the problem of excessive delay caused by the need for AF to re-deliver event subscription information when the PSA changes.

另外，在一些实施例中，在事件报告需要通过其他NEF反馈给AF时，SMF还可以在向UPF下发事件订阅信息以及对应的事件通知地址(如地址1)时(即执行S1105)，获取并发送该NEF的地址(如地址2)。UPF就可从SMF获取事件订阅信息，地址1以及地址2。在UPF获取对应的事件报告后，可以向该地址2发送事件报告，同时将地址1发送给地址2对应的NEF。以便NEF可以根据该地址1，将事件报告发送给对应的AF，实现事件报告的顺利发送。In addition, in some embodiments, when the event report needs to be fed back to the AF through other NEFs, the SMF can also obtain the event subscription information and the corresponding event notification address (such as address 1) to the UPF (that is, execute S1105). And send the address of the NEF (eg address 2). The UPF can then obtain the event subscription information, address 1 and address 2, from the SMF. After the UPF acquires the corresponding event report, it can send the event report to the address 2, and simultaneously send the address 1 to the NEF corresponding to the address 2. So that the NEF can send the event report to the corresponding AF according to the address 1, so as to realize the smooth sending of the event report.

上述主要从各个网元的角度对本申请实施例提供的方案进行了介绍。为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。The foregoing mainly introduces the solutions provided by the embodiments of the present application from the perspective of each network element. In order to realize the above-mentioned functions, it includes corresponding hardware structures and/or software modules for executing each function. Those skilled in the art should easily realize that the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

本申请实施例可以根据上述方法示例对上述各个网元进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。In this embodiment of the present application, the above network elements can be divided into functional modules according to the above method examples. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation.

请参考图12，为本申请实施例提供的一种事件通知装置1200的示意性框图。该事件通知装置1200可以设置于如图2或图3或图4或图5A所示的AF中，用于实现本申请实施例提供的任意一种事件通知方法。Please refer to FIG. 12 , which is a schematic block diagram of an event notification apparatus 1200 according to an embodiment of the present application. The event notification apparatus 1200 may be set in the AF as shown in FIG. 2 or FIG. 3 or FIG. 4 or FIG. 5A, and is used to implement any one of the event notification methods provided in the embodiments of the present application.

如图12所示，该事件通知装置1200可以包括：确定单元1201和发送单元1202。其中，确定单元1201用于确定第一信息和第二信息，第一信息包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址，网络接入标识用于指示应用的应用服务器的位置，事件通知地址为接收事件通知信息的目的地址，目的地址为应用对应的本地能力开放网元的地址或应用功能(AF)的地址。第二信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。发送单元1202用于发送第一信息和第二信息。作为一种示例，确定单元1201具体的可以根据应用服务器的指示，确定该第一信息和第二信息的具体内容。As shown in FIG. 12 , the event notification apparatus 1200 may include: a determining unit 1201 and a sending unit 1202 . The determining unit 1201 is configured to determine first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, and the network access identifier is used to indicate an application The location of the application server, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability open network element corresponding to the application or the address of the application function (AF). The second information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application. The sending unit 1202 is configured to send the first information and the second information. As an example, the determining unit 1201 may specifically determine the specific content of the first information and the second information according to the instruction of the application server.

需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。作为可选而不是必须，必要时，本申请实施例提供的事件通知装置1200还可以包括用于支持上述确定单元1201和/或发送单元1202完成相应功能的处理模块或者控制模块。It should be noted that, all relevant contents of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here. Optionally but not necessarily, if necessary, the event notification apparatus 1200 provided in this embodiment of the present application may further include a processing module or a control module for supporting the foregoing determining unit 1201 and/or sending unit 1202 to complete corresponding functions.

图13示出了的一种应用功能实体1300的组成示意图。该应用功能实体1300可以包括：处理器1301和存储器1302。该存储器1302用于存储计算机执行指令。示例性的，在一些实施例中，当该处理器1301执行该存储器1302存储的指令时，可以使得该应用功能实体1300执行上述示例中AF需要执行的操作。FIG. 13 shows a schematic composition diagram of an application function entity 1300 . The application function entity 1300 may include: a processor 1301 and a memory 1302 . The memory 1302 is used to store computer-implemented instructions. Exemplarily, in some embodiments, when the processor 1301 executes the instructions stored in the memory 1302, the application function entity 1300 can be caused to perform the operations that the AF needs to perform in the above examples.

需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。It should be noted that, all relevant contents of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here.

图14示出了的一种芯片***1400的组成示意图。该芯片***1400可以包括：处理器1401和通信接口1402，用于支持AF实现上述实施例中所涉及的功能。在一种可能的设计中，芯片***1400还包括存储器，用于保存AF必要的程序指令和数据。该芯片***1400，可以由芯片构成，也可以包含芯片和其他分立器件。FIG. 14 shows a schematic diagram of the composition of a chip system 1400 . The chip system 1400 may include: a processor 1401 and a communication interface 1402 for supporting the AF to implement the functions involved in the above embodiments. In a possible design, the system-on-a-chip 1400 further includes a memory for storing program instructions and data necessary for AF. The chip system 1400 may be composed of chips, or may include chips and other discrete devices.

请参考图15，为本申请实施例提供的又一种事件通知装置1500的示意性框图。该事件通知装置1500可以设置于如图2或图3或图4或图5A所示的PCF中，用于实现本申请实施例提供的任意一种事件通知方法。Please refer to FIG. 15 , which is a schematic block diagram of yet another event notification apparatus 1500 provided by an embodiment of the present application. The event notification apparatus 1500 may be set in the PCF as shown in FIG. 2 or FIG. 3 or FIG. 4 or FIG. 5A, and is used to implement any event notification method provided by the embodiments of the present application.

如图15所示，该事件通知装置1500可以包括：接收单元1501，发送单元1502。该接收单元1501，用于接收第一信息和第二信息，第一信息包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址，网络接入标识用于指示应用的应用服务器的位置，事件通知地址为接收事件通知信息的目的地址，目的地址为应用对应的本地能力开放网元的地址或应用功能AF的地址。第二信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。该发送单元1502，用于发送第三信息和第一信息，其中，第三信息根据第二信息确定，用于订阅第一事件。As shown in FIG. 15 , the event notification apparatus 1500 may include: a receiving unit 1501 and a sending unit 1502 . The receiving unit 1501 is configured to receive first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, and the network access identifier is used to indicate an application The location of the application server, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability open network element corresponding to the application or the address of the application function AF. The second information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application. The sending unit 1502 is configured to send third information and first information, wherein the third information is determined according to the second information and is used for subscribing to the first event.

需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。作为可选而不是必须，必要时，本申请实施例提供的事件通知装置1500还可以包括用于支持上述接收单元1501和/或发送单元1502完成相应功能的处理模块或者控制模块。It should be noted that, all relevant contents of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here. Optionally but not necessarily, if necessary, the event notification apparatus 1500 provided in this embodiment of the present application may further include a processing module or a control module for supporting the above-mentioned receiving unit 1501 and/or sending unit 1502 to complete corresponding functions.

图16示出了的一种策略控制功能实体1600的组成示意图。该策略控制功能实体1600可以包括：处理器1601和存储器1602。该存储器1602用于存储计算机执行指令。示例性的，在一些实施例中，当该处理器1601执行该存储器1602存储的指令时，可以使得该策略控制功能实体1600执行上述示例中PCF需要执行的操作。FIG. 16 shows a schematic composition diagram of a policy control functional entity 1600 . The policy control functional entity 1600 may include: a processor 1601 and a memory 1602 . The memory 1602 is used to store computer-implemented instructions. Exemplarily, in some embodiments, when the processor 1601 executes the instructions stored in the memory 1602, the policy control functional entity 1600 can be made to perform the operations that the PCF needs to perform in the above examples.

图17示出了的一种芯片***1700的组成示意图。该芯片***1700可以包括：处理器1701和通信接口1702，用于支持PCF实现上述实施例中所涉及的功能。在一种可能的设计中，芯片***1700还包括存储器，用于保存PCF必要的程序指令和数据。该芯片***1700，可以由芯片构成，也可以包含芯片和其他分立器件。FIG. 17 shows a schematic diagram of the composition of a chip system 1700 . The chip system 1700 may include: a processor 1701 and a communication interface 1702 for supporting the PCF to implement the functions involved in the above embodiments. In a possible design, the system-on-a-chip 1700 further includes a memory for storing necessary program instructions and data of the PCF. The chip system 1700 may be composed of chips, or may include chips and other discrete devices.

请参考图18，为本申请实施例提供的一种事件通知装置1800的示意性框图。该事件通知装置1800可以设置于如图2或图3或图4或图5A所示的SMF中，用于实现本申请实施例提供的任意一种事件通知方法。Please refer to FIG. 18 , which is a schematic block diagram of an event notification apparatus 1800 according to an embodiment of the present application. The event notification apparatus 1800 may be set in the SMF as shown in FIG. 2 or FIG. 3 or FIG. 4 or FIG. 5A, and is used to implement any one of the event notification methods provided by the embodiments of the present application.

如图18所示，该事件通知装置1800可以包括：接收单元1801和发送单元1802。接收单元1801，用于接收第一信息和第二信息，第一信息包括至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址，网络接入标识用于指示应用的应用服务器的位置，事件通知地址为接收事件通知信息的目的地址，目的地址为应用对应的本地能力开放网元的地址或应用功能AF的地址。第二信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。为终端设备选择第一用户面网元，第一用户面网元对应第一数据网络接入标识，至少一个数据网络接入标识包含第一数据网络接入标识。发送单元1802，用于发送第三信息，以及第一事件通知地址。其中，第三信息根据第二信息确定，用于订阅第一事件。第一事件通知地址根据第一数据网络接入标识，至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址确定。As shown in FIG. 18 , the event notification apparatus 1800 may include: a receiving unit 1801 and a sending unit 1802 . The receiving unit 1801 is configured to receive first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, and the network access identifier is used to indicate an application's The location of the application server, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability open network element corresponding to the application or the address of the application function AF. The second information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application. A first user plane network element is selected for the terminal device, the first user plane network element corresponds to the first data network access identifier, and at least one data network access identifier includes the first data network access identifier. The sending unit 1802 is configured to send the third information and the first event notification address. The third information is determined according to the second information and is used to subscribe to the first event. The first event notification address is determined according to the first data network access identifier, at least one data network access identifier, and an event notification address corresponding to the at least one data network access identifier.

在一种可能的设计中，发送单元1802，还用于发送第二事件通知地址，第二事件通知地址是与第一用户面网元对应的本地能力开放网元的地址。In a possible design, the sending unit 1802 is further configured to send a second event notification address, where the second event notification address is an address of a local capability openness network element corresponding to the first user plane network element.

在一种可能的设计中，该装置还包括配置单元1803，用于为访问应用的应用服务器的终端设备选择对应的第二用户面网元，第二用户面网元对应第二数据网络接入标识，至少一个数据网络接入标识包含第二数据网络接入标识。发送第四信息，以及第三事件通知地址。其中，第四信息根据第二信息确定，用于订阅第一事件。第三事件通知地址根据第二数据网络接入标识，至少一个数据网络接入标识和与至少一个数据网络接入标识对应的事件通知地址确定。In a possible design, the apparatus further includes a configuration unit 1803 for selecting a corresponding second user plane network element for the terminal device accessing the application server of the application, and the second user plane network element corresponds to the second data network access identifier, at least one data network access identifier includes a second data network access identifier. Send the fourth message, and the third event notification address. The fourth information is determined according to the second information, and is used to subscribe to the first event. The third event notification address is determined according to the second data network access identifier, at least one data network access identifier, and an event notification address corresponding to the at least one data network access identifier.

在一种可能的设计中，发送单元1802，还用于发送第***通知地址，第***通知地址是与第二用户面网元对应的本地能力开放网元的地址。In a possible design, the sending unit 1802 is further configured to send a fourth event notification address, where the fourth event notification address is the address of the local capability opening network element corresponding to the second user plane network element.

需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。作为可选而不是必须，必要时，本申请实施例提供的事件通知装置1800还可以包括用于支持上述接收单元1801和/或发送单元1802和/或配置单元1803完成相应功能的处理模块或者控制模块。It should be noted that, all relevant contents of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here. Optionally but not necessarily, if necessary, the event notification apparatus 1800 provided in this embodiment of the present application may further include a processing module or control for supporting the above-mentioned receiving unit 1801 and/or sending unit 1802 and/or configuring unit 1803 to complete corresponding functions module.

图19示出了的一种会话管理功能实体1900的组成示意图。该会话管理功能实体1900可以包括：处理器1901和存储器1902。该存储器1902用于存储计算机执行指令。示例性的，在一些实施例中，当该处理器1901执行该存储器1902存储的指令时，可以使得该会话管理功能实体1900执行上述示例中SMF需要执行的操作。Fig. 19 shows a schematic diagram of the composition of a session management functional entity 1900. The session management functional entity 1900 may include: a processor 1901 and a memory 1902 . The memory 1902 is used to store computer-implemented instructions. Exemplarily, in some embodiments, when the processor 1901 executes the instructions stored in the memory 1902, the session management function entity 1900 can be made to perform the operations that the SMF needs to perform in the above examples.

图20示出了的一种芯片***2000的组成示意图。该芯片***2000可以包括：处理器2001和通信接口2002，用于支持SMF实现上述实施例中所涉及的功能。在一种可能的设计中，芯片***2000还包括存储器，用于保存SMF必要的程序指令和数据。该芯片***2000，可以由芯片构成，也可以包含芯片和其他分立器件。FIG. 20 shows a schematic diagram of the composition of a chip system 2000 . The chip system 2000 may include: a processor 2001 and a communication interface 2002 for supporting the SMF to implement the functions involved in the above embodiments. In a possible design, the system-on-a-chip 2000 further includes a memory for storing necessary program instructions and data for the SMF. The chip system 2000 may be composed of chips, or may include chips and other discrete devices.

请参考图21，为本申请实施例提供的一种事件通知装置2100的示意性框图。该事件通知装置2100可以设置于如图2或图3或图4或图5A所示的UPF中，用于实现本申请实施例提供的任意一种事件通知方法。Please refer to FIG. 21 , which is a schematic block diagram of an event notification apparatus 2100 according to an embodiment of the present application. The event notification apparatus 2100 may be set in the UPF as shown in FIG. 2 or FIG. 3 or FIG. 4 or FIG. 5A , and is used to implement any one of the event notification methods provided in the embodiments of the present application.

如图21所示，该事件通知装置2100可以包括：接收单元2101和发送单元2102。As shown in FIG. 21 , the event notification apparatus 2100 may include: a receiving unit 2101 and a sending unit 2102 .

接收单元2101，用于接收第一信息，第一事件通知地址以及第二事件通知地址，第一信息用于订阅终端设备的第一事件，终端设备是访问应用的应用服务器的设备。第一事件通知地址为接收第一事件的事件通知信息的目的地址，目的地址为应用对应应用功能AF的地址。第二事件通知地址是与第一用户面网元对应的本地能力开放网元的地址。发送单元2102，用于通过第二事件通知地址，向第一事件通知地址发送第二信息，第二信息包括第一事件的事件通知信息。The receiving unit 2101 is configured to receive first information, a first event notification address and a second event notification address, where the first information is used to subscribe to a first event of a terminal device, which is a device accessing an application server of an application. The first event notification address is a destination address for receiving event notification information of the first event, and the destination address is an address of the application corresponding to the application function AF. The second event notification address is the address of the local capability opening network element corresponding to the first user plane network element. The sending unit 2102 is configured to send second information to the first event notification address through the second event notification address, where the second information includes event notification information of the first event.

需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。作为可选而不是必须，必要时，本申请实施例提供的事件通知装置2100还可以包括用于支持上述接收单元2101和发送单元2102完成相应功能的处理模块或者控制模块。It should be noted that, all relevant contents of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here. Optionally but not necessarily, if necessary, the event notification apparatus 2100 provided in this embodiment of the present application may further include a processing module or a control module for supporting the above-mentioned receiving unit 2101 and sending unit 2102 to complete corresponding functions.

图22示出了的一种用户面功能实体2200的组成示意图。该应用功能实体2200可以包括：处理器2201和存储器2202。该存储器2202用于存储计算机执行指令。示例性的，在一些实施例中，当该处理器2201执行该存储器2202存储的指令时，可以使得该用户面功能实体2200执行上述示例中UPF需要执行的操作。FIG. 22 shows a schematic composition diagram of a user plane functional entity 2200. The application function entity 2200 may include: a processor 2201 and a memory 2202 . The memory 2202 is used to store computer-implemented instructions. Exemplarily, in some embodiments, when the processor 2201 executes the instructions stored in the memory 2202, the user plane functional entity 2200 can be made to perform the operations that the UPF needs to perform in the above examples.

图23示出了的一种芯片***2300的组成示意图。该芯片***2300可以包括：处理器2301和通信接口2302，用于支持UPF实现上述实施例中所涉及的功能。在一种可能的设计中，芯片***2300还包括存储器，用于保存UPF必要的程序指令和数据。该芯片***2300，可以由芯片构成，也可以包含芯片和其他分立器件。FIG. 23 shows a schematic diagram of the composition of a chip system 2300 . The chip system 2300 may include: a processor 2301 and a communication interface 2302 for supporting the UPF to implement the functions involved in the above embodiments. In a possible design, the system-on-a-chip 2300 further includes a memory for storing necessary program instructions and data for the UPF. The chip system 2300 may be composed of chips, or may include chips and other discrete devices.

在上述实施例中的功能或动作或操作或步骤等，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包括一个或多个可以用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)，光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。The functions or actions or operations or steps in the above embodiments may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer, or data storage devices including one or more servers, data centers, etc. that can be integrated with the medium. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.

尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包括这些改动和变型在内。Although the application has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made therein without departing from the spirit and scope of the application. Accordingly, this specification and drawings are merely illustrative of the application as defined by the appended claims, and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

一种事件通知方法，其特征在于，所述方法包括：An event notification method, characterized in that the method comprises:

接收第一信息和第二信息，所述第一信息包括至少一个数据网络接入标识和与所述至少一个数据网络接入标识对应的事件通知地址，所述网络接入标识用于指示应用的应用服务器的位置，所述事件通知地址为接收事件通知信息的目的地址，所述目的地址为所述应用对应的本地能力开放网元的地址或应用功能AF的地址；Receive first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, where the network access identifier is used to indicate an application's The location of the application server, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability opening network element corresponding to the application or the address of the application function AF;

所述第二信息用于订阅终端设备的第一事件，所述终端设备是访问所述应用的应用服务器的设备；The second information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application;

为所述终端设备选择第一用户面网元，所述第一用户面网元对应第一数据网络接入标识，所述至少一个数据网络接入标识包含所述第一数据网络接入标识；selecting a first user plane network element for the terminal device, where the first user plane network element corresponds to a first data network access identifier, and the at least one data network access identifier includes the first data network access identifier;

发送第三信息，以及第一事件通知地址，所述第一事件通知地址为接收所述第一事件的事件通知信息的目的地址；sending third information and a first event notification address, where the first event notification address is a destination address for receiving event notification information of the first event;

其中，所述第三信息根据所述第二信息确定，用于订阅所述第一事件；所述第一事件通知地址根据所述第一数据网络接入标识，所述至少一个数据网络接入标识和与所述至少一个数据网络接入标识对应的事件通知地址确定。The third information is determined according to the second information and is used to subscribe to the first event; the first event notification address is based on the first data network access identifier, the at least one data network access The identification and the event notification address corresponding to the at least one data network access identification are determined.
根据权利要求1所述的方法，其特征在于，所述方法还包括：The method according to claim 1, wherein the method further comprises:

发送第二事件通知地址，所述第二事件通知地址是与所述第一用户面网元对应的本地能力开放网元的地址。A second event notification address is sent, where the second event notification address is an address of a local capability opening network element corresponding to the first user plane network element.
根据权利要求1或2所述的方法，其特征在于，所述第二信息还包括：通知关联标识,所述通知关联标识用于将所述第一事件的事件通知信息与所述第一信息关联，所述第三信息还包括所述通知关联标识。The method according to claim 1 or 2, wherein the second information further comprises: a notification association identifier, wherein the notification association identifier is used to associate the event notification information of the first event with the first information association, and the third information further includes the notification association identifier.
根据权利要求1-3中任一项所述的方法，其特征在于，所述第二信息至少包括以下信息之一：服务质量QoS监控请求信息，QoS通知控制请求信息，位置请求信息。The method according to any one of claims 1-3, wherein the second information includes at least one of the following information: quality of service (QoS) monitoring request information, QoS notification control request information, and location request information.
一种事件通知装置，其特征在于，所述装置用于执行如权利要求1-4中任一项所述的事件通知方法。An event notification device, characterized in that, the device is configured to execute the event notification method according to any one of claims 1-4.
一种会话管理功能SMF实体，其特征在于，所述SMF实体包括一个或多个处理器和一个或多个存储器；所述一个或多个存储器与所述一个或多个处理器耦合，所述一个或多个存储器存储有计算机指令；A session management function SMF entity, characterized in that the SMF entity includes one or more processors and one or more memories; the one or more memories are coupled with the one or more processors, and the one or more memories storing computer instructions;

当所述一个或多个处理器执行所述计算机指令时，使得所述SMF实体执行如权利要求1-4中任一项所述的事件通知方法。The computer instructions, when executed by the one or more processors, cause the SMF entity to perform the event notification method of any of claims 1-4.
一种事件通知方法，其特征在于，所述方法包括：An event notification method, characterized in that the method comprises:

发送第一信息和第二信息，所述第一信息包括至少一个数据网络接入标识和与所述至少一个数据网络接入标识对应的事件通知地址，所述网络接入标识用于指示应用的应用服务器的位置，所述事件通知地址为接收事件通知信息的目的地址，所述目的地址为所述应用对应的本地能力开放网元的地址或应用功能AF的地址；Send first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, where the network access identifier is used to indicate the application The location of the application server, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability opening network element corresponding to the application or the address of the application function AF;

所述第二信息用于订阅终端设备的第一事件，所述终端设备是访问所述应用的应用服务器的设备。The second information is used for subscribing to the first event of the terminal device, where the terminal device is a device accessing the application server of the application.
根据权利要求7所述的方法，其特征在于，所述第二信息还包括：通知关联标识,所述通知关联标识用于将所述第一事件的事件通知信息与所述第一信息关联。The method according to claim 7, wherein the second information further comprises: a notification association identifier, wherein the notification association identifier is used to associate the event notification information of the first event with the first information.
根据权利要求7或8所述的方法，其特征在于，所述第二信息至少包括以下信息之一：服务质量QoS监控请求信息，QoS通知控制请求信息，位置请求信息。The method according to claim 7 or 8, wherein the second information includes at least one of the following information: quality of service (QoS) monitoring request information, QoS notification control request information, and location request information.
一种事件通知装置，其特征在于，所述装置用于执行如权利要求7-9中任一项所述的事件通知方法。An event notification device, characterized in that, the device is configured to execute the event notification method according to any one of claims 7-9.
一种应用功能AF实体，其特征在于，所述AF实体包括一个或多个处理器和一个或多个存储器；所述一个或多个存储器与所述一个或多个处理器耦合，所述一个或多个存储器存储有计算机指令；An application function AF entity, characterized in that the AF entity includes one or more processors and one or more memories; the one or more memories are coupled with the one or more processors, and the one or more memories storing computer instructions;

当所述一个或多个处理器执行所述计算机指令时，使得所述AF实体执行如权利要求7-9中任一项所述的事件通知方法。When the one or more processors execute the computer instructions, the AF entity is caused to perform the event notification method of any one of claims 7-9.
一种事件通知方法，其特征在于，所述方法包括：An event notification method, characterized in that the method comprises:

接收第一信息和第二信息，所述第一信息包括至少一个数据网络接入标识和与所述至少一个数据网络接入标识对应的事件通知地址，所述网络接入标识用于指示应用的应用服务器的位置，所述事件通知地址为接收事件通知信息的目的地址，所述目的地址为所述应用对应的本地能力开放网元的地址或应用功能AF的地址；Receive first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, where the network access identifier is used to indicate an application's The location of the application server, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability opening network element corresponding to the application or the address of the application function AF;

所述第二信息用于订阅终端设备的第一事件，所述终端设备是访问所述应用的应用服务器的设备；The second information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application;

发送第三信息和所述第一信息，其中，所述第三信息根据所述第二信息确定，用于订阅所述第一事件。Sending third information and the first information, wherein the third information is determined according to the second information and used for subscribing to the first event.
根据权利要求12所述的方法，其特征在于，所述第二信息还包括：通知关联标识,所述通知关联标识用于将所述第一事件的事件通知信息与所述第一信息关联，所述第三信息还包括所述通知关联标识。The method according to claim 12, wherein the second information further comprises: a notification association identifier, the notification association identifier is used to associate the event notification information of the first event with the first information, The third information further includes the notification association identifier.
根据权利要求12或13所述的方法，其特征在于，所述第二信息至少包括以下信息之一：服务质量QoS监控请求信息，QoS通知控制请求信息，位置请求信息。The method according to claim 12 or 13, wherein the second information includes at least one of the following information: quality of service (QoS) monitoring request information, QoS notification control request information, and location request information.
一种事件通知装置，其特征在于，所述装置用于执行如权利要求12-14中任一项所述的事件通知方法。An event notification device, characterized in that, the device is configured to execute the event notification method according to any one of claims 12-14.
一种策略控制功能PCF实体，其特征在于，所述PCF实体包括一个或多个处理器和一个或多个存储器；所述一个或多个存储器与所述一个或多个处理器耦合，所述一个或多个存储器存储有计算机指令；A policy control function PCF entity, characterized in that the PCF entity includes one or more processors and one or more memories; the one or more memories are coupled with the one or more processors, and the one or more memories storing computer instructions;

当所述一个或多个处理器执行所述计算机指令时，使得所述PCF实体执行如权利要求12-14中任一项所述的事件通知方法。The computer instructions, when executed by the one or more processors, cause the PCF entity to perform the event notification method of any of claims 12-14.
一种事件通知方法，其特征在于，所述方法包括：An event notification method, characterized in that the method comprises:

接收第一信息，第一事件通知地址以及第二事件通知地址，所述第一信息用于订阅终端设备的第一事件，所述终端设备是访问应用的应用服务器的设备；所述第一事件通知地址为接收所述第一事件的事件通知信息的目的地址，所述目的地址为所述应用对应应用功能AF的地址；所述第二事件通知地址是与所述第一用户面网元对应的本地能力开放网元的地址；Receive first information, a first event notification address and a second event notification address, where the first information is used to subscribe to a first event of a terminal device, and the terminal device is a device that accesses an application server of an application; the first event The notification address is the destination address for receiving the event notification information of the first event, and the destination address is the address of the application corresponding to the application function AF; the second event notification address is corresponding to the first user plane network element The address of the local capability open network element;

通过所述第二事件通知地址对应的所述本地能力开放网元，向所述第一事件通知地址发送第二信息，所述第二信息包括所述第一事件的事件通知信息。Send second information to the first event notification address through the local capability opening network element corresponding to the second event notification address, where the second information includes event notification information of the first event.
根据权利要求17所述的方法，其特征在于，所述第一信息还包括：通知关联标识,所述通知关联标识用于将所述第一事件的事件通知信息与所述事件通知地址关联，所述第二信息还包括所述通知关联标识。The method according to claim 17, wherein the first information further comprises: a notification association identifier, wherein the notification association identifier is used to associate the event notification information of the first event with the event notification address, The second information further includes the notification association identifier.
根据权利要求17或18所述的方法，其特征在于，所述第一信息至少包括以下信息之一：服务质量QoS监控请求信息，QoS通知控制请求信息，位置请求信息。The method according to claim 17 or 18, wherein the first information includes at least one of the following information: quality of service (QoS) monitoring request information, QoS notification control request information, and location request information.
一种事件通知装置，其特征在于，所述装置用于执行如权利要求17-19中任一项所述的事件通知方法。An event notification device, characterized in that, the device is configured to execute the event notification method according to any one of claims 17-19.
一种用户面功能UPF实体，其特征在于，所述UPF实体包括一个或多个处理器和一个或多个存储器；所述一个或多个存储器与所述一个或多个处理器耦合，所述一个或多个存储器存储有计算机指令；A user plane function UPF entity, characterized in that the UPF entity includes one or more processors and one or more memories; the one or more memories are coupled to the one or more processors, and the one or more memories storing computer instructions;

当所述一个或多个处理器执行所述计算机指令时，使得所述UPF实体执行如权利要求17-19中任一项所述的事件通知方法。The computer instructions, when executed by the one or more processors, cause the UPF entity to perform the event notification method of any of claims 17-19.
一种通信***，其特征在于，所述***包括：第一网元，第二网元，第三网元以及第四网元；A communication system, characterized in that the system comprises: a first network element, a second network element, a third network element and a fourth network element;

所述第一网元，用于发送第一信息和第二信息，所述第一信息包括至少一个数据网络接入标识和与所述至少一个数据网络接入标识对应的事件通知地址，所述网络接入标识用于指示应用的应用服务器的位置，所述事件通知地址为接收事件通知信息的目的地址，所述目的地址为所述应用对应的本地能力开放网元的地址或应用功能AF的地址；所述第二信息用于订阅终端设备的第一事件，所述终端设备是访问所述应用的应用服务器的设备；The first network element is configured to send first information and second information, where the first information includes at least one data network access identifier and an event notification address corresponding to the at least one data network access identifier, the The network access identifier is used to indicate the location of the application server of the application, the event notification address is the destination address for receiving event notification information, and the destination address is the address of the local capability open network element corresponding to the application or the address of the application function AF address; the second information is used to subscribe to the first event of the terminal device, and the terminal device is a device that accesses the application server of the application;

所述第二网元，用于接收所述第一信息和所述第二信息；发送第三信息和所述第一信息，其中，所述第三信息根据所述第二信息确定，用于订阅所述第一事件；The second network element is configured to receive the first information and the second information; send third information and the first information, wherein the third information is determined according to the second information, and is used for subscribing to the first event;

所述第三网元，用于接收所述第一信息和所述第三信息；为所述终端设备选择第一用户面网元，所述第一用户面网元对应第一数据网络接入标识，所述至少一个数据网络接入标识包含所述第一数据网络接入标识；发送第四信息，以及第一事件通知地址；其中，所述第四信息根据所述第三信息确定，用于订阅所述第一事件；所述第一事件通知地址根据所述第一数据网络接入标识，所述至少一个数据网络接入标识和与所述至少一个数据网络接入标识对应的事件通知地址确定；The third network element is configured to receive the first information and the third information; select a first user plane network element for the terminal device, and the first user plane network element corresponds to the first data network access identifier, the at least one data network access identifier includes the first data network access identifier; send fourth information, and a first event notification address; wherein the fourth information is determined according to the third information, using for subscribing to the first event; the first event notification address is based on the first data network access identifier, the at least one data network access identifier and the event notification corresponding to the at least one data network access identifier address determination;

所述第四网元，用于接收所述第四信息和所述第一事件通知地址；向所述第一事件通知地址发送第五信息，所述第五信息包括所述第一事件的事件通知信息。The fourth network element is configured to receive the fourth information and the first event notification address; and send fifth information to the first event notification address, where the fifth information includes the event of the first event notification information.
根据权利要求22所述的通信***，其特征在于，所述第一网元为AF网元，所述第二网元为策略控制功能PCF网元，所述第三网元为会话管理功能SMF网元，所述第四网元为用户面功能UPF网元。The communication system according to claim 22, wherein the first network element is an AF network element, the second network element is a policy control function PCF network element, and the third network element is a session management function SMF A network element, the fourth network element is a user plane function UPF network element.